--- title: OneCal Reviews meta_title: 'OneCal Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 105 reviews by the users' company size, role or industry to find out how OneCal works for a business like yours. aggregate_rating: rating_value: 4.7 review_count: 105 scale: '5' date_modified: '2026-09-28' parent_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # OneCal Reviews **Vendor:** OneCal **Category:** [Calendar Software](https://www.g2.com/categories/calendar-software) **Average Rating:** 4.7/5.0 **Total Reviews:** 105 **AI Enabled:** This product embeds AI to enhance or extend its core functionality. ## About OneCal OneCal is a calendar platform that syncs iCloud, Outlook, and Google Calendars in real time, provides intuitive Scheduling Links that make booking meetings simple, and lets you view and manage all of your calendars in a unified calendar view. The service is cloud-based, so there is nothing to install, and the setup takes just a few minutes. Main features: • Calendar Synchronization: OneCal is the most advanced Calendar Sync software in the market. You can sync multiple iCloud, Google, and Outlook calendars in real time, so your availability is reflected everywhere and you never get double booked. Syncs can be one-way or multi-way, and you choose exactly which event details are copied, which keeps your personal life private. You can also exclude events from syncing by color or category, color-code the synced events, and add an identifier to cloned events so they are easy to recognize. Every plan includes unlimited sync configurations and unlimited synced events. • Scheduling Links: You can effortlessly manage your appointments, meetings, and events with our user-friendly Scheduling Links, and say goodbye to tedious back-and-forth communication. All plans include unlimited one-on-one and collective booking links. OneCal reads your availability from all of your connected calendars, so invitees only see times when you are truly free. Each link can be customized with meeting durations, time slot intervals, availability schedules, buffer times, minimum notice periods, and limits on how far in advance people can book. You can also ask invitees custom questions, require manual confirmation, show a custom confirmation message, and redirect invitees to your own page after they book. Booking pages can carry your own logo, they can be embedded on your website, and the Premium plan lets you remove OneCal branding completely. • Unified Calendar View: The Unified Calendar View lets you see and manage all of your iCloud, Outlook, and Google Calendars in one place. You can create, edit, and delete events, RSVP to invites, join meetings with one click, hide the clones created by OneCal Calendar Sync, and see when your teammates are available. Available on the App Store and Play Store.. • Mobile and Desktop Apps: You can use all of the OneCal features straight from your preferred device with our iOS, Android, and macOS apps. The mobile apps let you manage your calendar syncs, scheduling links, and calendars right from your phone. • Integrations: OneCal connects with the tools you already use. Zoom, Google Meet, and Microsoft Teams links are added to your bookings automatically, so every meeting is ready the moment it is scheduled. Through Zapier, you can connect OneCal to thousands of other apps using pre-built triggers and actions. • MCP Server: The OneCal MCP Server gives AI assistants like Claude and ChatGPT secure access to your calendars. Your assistant can list your events, check your availability, and create, update, or delete events for you. Built for teams and enterprises: • Admin Managed Accounts: Admins can fully manage the accounts of their team members, as long as each user allows it. • User Provisioning API: The API lets you programmatically invite users, remove users, retrieve existing team members along with their sync usage, and view pending invitations. • OIDC/SAML SSO: Your team can sign in to OneCal through your identity provider, such as Okta, Azure AD, or Google Workspace, using OpenID Connect or SAML. • SCIM Directory Sync: Team members are automatically provisioned and deprovisioned from your identity provider using the SCIM protocol. • Team management: Pricing is per user, team management is simple and intuitive, and team members can sign up on their own. • Dedicated support: Teams on the Premium plan get dedicated support through Slack or Discord, along with hands-on user onboarding assistance. Security and compliance: • OneCal is SOC 2 Type II certified and GDPR compliant, and a Data Processing Agreement (DPA) is included. • OneCal connects to your calendars through OAuth2 and never stores your passwords. All data is encrypted in transit and at rest. • OneCal does not store or analyze your calendar event data, and it only asks for the minimal permissions it needs to work. You can try OneCal free for 14 days, and no credit card is required. ## OneCal Pros & Cons Pros and Cons are compiled from review feedback and grouped into themes to provide an easy-to-understand summary of user reviews. **What users like:** - Users commend the **ease of use** of OneCal, appreciating its seamless calendar synchronization and fantastic support. (6 reviews) - Users value the **seamless calendar integration** of OneCal, effectively avoiding scheduling conflicts and saving time. (5 reviews) - Users appreciate the **simple setup** of OneCal, making scheduling effortless and saving valuable time on rescheduling. (5 reviews) - Users value the **real-time syncing capabilities** of OneCal, effectively managing availability across multiple calendars without conflicts. (5 reviews) - Users praise the **easy setup** of OneCal, enabling seamless integration and effortless scheduling management. (4 reviews) - Easy Implementation (3 reviews) - User Interface (3 reviews) - Users love the **seamless calendar integration** of OneCal, enabling effortless management of multiple calendars in one place. (2 reviews) - Customer Support (2 reviews) - Users love the **easy integrations** of OneCal, simplifying calendar management across multiple platforms effortlessly. (2 reviews) **What users dislike:** - Users find the **50 calendar limit** restrictive, complicating management and sync processes, leading to inefficiencies. (3 reviews) - Users note the **missing features** in OneCal's booking system, limiting its functionality compared to competitors. (2 reviews) - Users find OneCal to be a bit **expensive** , particularly when connecting multiple calendars over five. (1 reviews) - Users highlight the **pricing issues** for an unresponsive app that requires frequent unlinking and relinking of calendars. (1 reviews) - Users experience **scheduling issues** with OneCal's less mature booking feature, affecting their overall satisfaction. (1 reviews) - Slow Performance (1 reviews) ## OneCal Reviews ### 1. Keeps Availability on my Work Calendar Accurate **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Religious Institutions | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account added to their profile **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 17, 2026 **What do you like best about OneCal?** OneCal is a reliable and simple solution to Calendar syncing. It handles integration with Microsoft 365 and Apple Calendar pretty well. I like it because it let's me have personal Apple Calendar events block out time on my work calendar. Having my work calendar reflect my actual availability without including personal details is important to me, and OneCal does the trick. The pricing is a little bit high for my use case, but worth it to me. The UI is a little frustrating sometimes, and I would not use their native calendar view as my default calendaring app. It can be a little slow, but this is understandable. I also appreciate the extra features like booking links, which are much more polished than Microsoft Booking. **What do you dislike about OneCal?** I don't have any real frustrations with OneCal. The UI could be improved a little, and their native calendar app could be a little more feature rich and responsive, but this is not my use case anyway. **What problems is OneCal solving and how is that benefiting you?** It is solving personal calendar syncing availability into my work calendar while maintaining privacy. It does this very well. ### 2. Lightning-Fast Support That Ships Feature Requests in Minutes **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 02, 2026 **What do you like best about OneCal?** The support responsiveness. I sent a small feature request through the feedback form (preselecting the meeting duration in a booking link) and had it shipped and live 34 minutes later, with the new URL parameter and a short-domain variant. **What do you dislike about OneCal?** Two small usability gaps. To add a colleague to a joint team booking link, they first have to onboard and create a booking link of their own, which confuses new users and adds a step nobody expects. And the limit of two connected calendar accounts is tight for people juggling several. Neither has been a real blocker for us. **What problems is OneCal solving and how is that benefiting you?** We live in Google Workspace but many of our customers are on Teams, and OneCal lets us schedule Teams meetings straight from a Google-connected booking link, which Google's own scheduling can't do. It also gives a much cleaner overview of all our booking links (individual, multi-duration, and team calendars) than Google Workspace's appointment schedules. ### 3. Seamless Google Calendar Sync That Prevents Double and Triple Booking **Rating:** 5.0/5.0 stars **Reviewed by:** Matt W. | owner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 16, 2026 **What do you like best about OneCal?** I'm a consultant. I have 4 different google calendar accounts w/ different companies. The specific issue I needed to solve was that when I put something on one calendar, I needed it to block all of the other calendars. This seamlessly and effortlessly makes that possible. I've used it for 2-3 years now and it's perfect. **What do you dislike about OneCal?** Very occasionally, you have to jump in and give it a nudge by manually re-running the sync. But that's like once every several months, and not a burden for the value I get in all of the other time that it is automated. **What problems is OneCal solving and how is that benefiting you?** I'm a consultant with multiple clients accounts. When I book something on one of them, the native google calendar functionality would all me to see where I was free, but for any of my clients, they couldn't see it and keep double and triple booking me. This allows me to automatically and effortlessly keep all calendars synched, and has single handedly solved that problem. ### 4. Intuitive, Fast Real-Time Sync That Makes Managing 8 Calendars Effortless **Rating:** 5.0/5.0 stars **Reviewed by:** Gabriella O. | Partner & Principal, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 08, 2026 **What do you like best about OneCal?** The user interface is intuitive and clean, setup is easy and there's little to no maintenance needed. I didn't read a single support article because it all just ... makes sense to set up. It offers a variety of options in configuring the sync so that you share only what you want. The syncs are fast and it stays up-to-date in realtime. I love the booking links and the public calendar and ICS features. I have 9 calendars to manage and it has saved my life. It's made it so easy for colleagues and clients to see my actual availability and schedule with me without needing to share my calendars directly with one another. It's a perfect solution to my problem. **What do you dislike about OneCal?** I'd like to see the ability to add more than 8 calendars and I'd love more integration options. For example, I'd like to use my notetaker across all my calendars. I'd really like the ability to mark events on specific calendars as billable and see the totals for the week. **What problems is OneCal solving and how is that benefiting you?** As a consultant, I work across 10 or more clients at a time and this allows me a secure way to manage my calendars and availability. It's saved me a lot of time and headaches and I manage my whole day through it. ### 5. Calendar Synchronization Made Easy **Rating:** 5.0/5.0 stars **Reviewed by:** Philipp D. | Director Strategic Business Development | Co-Founder & President of the Board of Directors, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from German using AI. **Reviewed Date:** May 08, 2026 **What do you like best about OneCal?** I think it's great that OneCal keeps track of my appointments, especially since I manage multiple companies and accordingly multiple email accounts and calendars. It offers simple ways to synchronize the different calendars, which allows me to keep everything in view. I particularly like the booking page, which makes it a perfect place to manage everything related to my appointments. The initial setup process was super easy, as I could sign in with Gmail, for example, and the synchronization of the calendars is explained very clearly. In combination with Google and Outlook calendars, OneCal works perfectly to synchronize everything. **What do you dislike about OneCal?** The only thing I would personally like is for the app to allow setting the appointment to private. **What problems is OneCal solving and how is that benefiting you?** OneCal helps me easily synchronize multiple calendars from different companies and keep track of appointments without having to manually map everything each time. It is super easy and works perfectly with Google and Outlook calendars. ### 6. Solves scheduling conflicts across clients **Rating:** 5.0/5.0 stars **Reviewed by:** Sean C. | Consultant, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 07, 2025 At G2, we prefer fresh reviews and we like to follow up with reviewers. They may not have updated their review text, but have updated their review. **What do you like best about OneCal?** I work with multiple clients, and it has always been a challenge coordinating availability. While booking pages work well, they require my clients to remember that I (1) have a booking page and that (2) my availability in their internal system isn't reflective of my actual availability. Those hurdles lead to people just scheduling a time on an open slot, which causes conflicts. OneCal solves this in the simplest way possible: By copying my calendar entries across my calendars, everyone gets to see my actual availability in the system they are already using. OneCal's booking feature handles availability for anyone who isn't part of an organization I'm already working with, fully covering my use cases. OneCal allows you to select the level of information you share, which allows me to prevent clients' information from being shared with other clients. It's a great system and has already saved me hours of time by not having to reschedule meetings. **What do you dislike about OneCal?** Updated May 2026: While neither of these features has been added, I've found that I haven't used them enough in Calendly to justify the extra service. I've fully replaced Calendly with OneCal. --- As of August 2025, OneCal's booking feature isn't as mature as competitor products. It isn't the core feature of OneCal, so it doesn't make me any less likely to recommend OneCal. Specific features the booking feature lacks: Ability to limit the number of an events scheduled on a day (e.g., I can only schedule one off-site meeting per day) and creating one-off meeting links with custom availability. I expect these features to mature over time, but I haven't been able to 100% replace my Calendly subscription just yet. **What problems is OneCal solving and how is that benefiting you?** Synchronizing calendars across organizations ### 7. OneCal Effortlessly Syncs in Real-Time to avoid scheduling conflicts **Rating:** 5.0/5.0 stars **Reviewed by:** Alan C. | Full Stack GIS Developer, Program Development, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** I primarily utilize OneCal to keep multiple calendars synced so that different organizations can see my shared schedule. Traditional calendar sharing will not allow other users to see exterior calendars making it nearly impossible to reschedule meetings without manually checking. This one tool helps me manage tons of calendars effectively and my coworkers, clients, and companies can all keep track of my schedule in real-time as opposed to having to have me constantly backtracking on meetings. **What do you dislike about OneCal?** Overall there isn't a lot to dislike about OneCal. I think they could have a slightly better price scaling or segment there capabilities for users that care more about calendar sync versus booking links, etc. They are also still a bit new from my persepective, but do have a solid platform and the growth I've seen so far gives me a great impression they will have a great continuous development cycle that will make this application one of the best for calendar management in the near future. **What problems is OneCal solving and how is that benefiting you?** Syncing multiple calendars in real time used to take a fair amount of time and/or Power Automate and/or Google Script options which was a bit frustrating to keep up with. Delegating this to a decently priced service is a life-saver for my situation. ### 8. Best Calendar Cloning tool out there, with schedule integrations too! **Rating:** 5.0/5.0 stars **Reviewed by:** Don D. | Cyber Security Specialist, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 10, 2026 **What do you like best about OneCal?** OneCal is easily the best tool for cloning appointments across multiple calendars. I manage so many client calendars that it’s way too time-consuming to copy everything manually. With OneCal, I can automatically clone appointments and use my Teams/Office integration so meetings get scheduled appropriately and automatically. It’s not the cheapest tool in the industry, but in my experience it’s definitely the best. The also have a Discord group with the developers if you ever have UI / UX suggestions or need more direct support. **What do you dislike about OneCal?** I have not had any issues with OneCal. SOMETIMES the syncing goes slowly, but you can log into the portal and "Re-Run" and everything gets cleaned up. **What problems is OneCal solving and how is that benefiting you?** Cloning availability across multiple client calendars, as a consultant, is an incredible headache. This way, OneCal does the cloning for me. ### 9. Intuitive, Set-and-Forget Setup That Just Works in the Background **Rating:** 4.0/5.0 stars **Reviewed by:** Tom A. | Night Manager / Settlement Worker, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 12, 2026 **What do you like best about OneCal?** Really intuitive and simple interface - it takes a few minutes to set up, and then just runs in the background while you get on with your life. I haven't really had to think about it since I signed up more than a year ago, which is a good thing. **What do you dislike about OneCal?** I stopped recieving 2 step verification emails from OneCal because my email provider had marked them as spam. This was confusing, and I needed to reach out to OneCal to "whitelist" my own email again - seems like something that should be ironed out between OneCal and major email providers. **What problems is OneCal solving and how is that benefiting you?** I have a number of work and personal calendars that I can now consolidate in one place (without having to navigate the clunky native functionality of the email accounts themselves). Not an exaggeration to say it's been a game changer for me. ### 10. A Lifesaver for Syncing Multiple Calendars and Showing True Availability **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** July 01, 2026 **What do you like best about OneCal?** I'm a freelancer and typically have 2-3 clients at a time. They set me up with accounts on their systems which means I easily have 4-5 calendars between theirs and my own calendars. OneCal is the only way to keep everything in sync and show true availability. It's a lifesaver for running a business like mine. Set up is fairly easy; I like the booking flows and ability to customize reminder emails etc. **What do you dislike about OneCal?** Pricing is a bit high imo, which is the only drawback. Enough that I tend to evaluate every once in a while if there's another way to get the same outcome. One thing I wish they had: when an engagement is over and I cut off the sync to that client I completely lose that entire calendar. It's just wiped. So I have no record of my meetings etc which I use often when I need to figure out a mysterious charge or something (eg oh that's a fee for parking when I was at client XYZ). Other than that, I do think it's worth it, especially if you're wrangling a lot of calendars like me. **What problems is OneCal solving and how is that benefiting you?** I can confidently send someone a link to my calendar and know that it's my true availability. ### 11. Seamless Apple and Google Calendar Sync, Minor Pauses **Rating:** 4.0/5.0 stars **Reviewed by:** Jon . | Small-Business (50 or fewer emp.) **Validated Reviewer:** This review contains authentic analysis and has been reviewed by our team **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 16, 2026 **What do you like best about OneCal?** I like that OneCal runs in the background and appears to be a seamless live connection. It effectively connects my Apple Calendar to my Google Calendar, enabling integration with ChatGPT. Even though it can connect multiple calendars, it perfectly serves its purpose between my two calendars. **What do you dislike about OneCal?** I find that sometimes it pauses for no apparent reason. It would be nice if OneCal alerted me when it becomes paused. The setup wasn't difficult for me, but it does require a little bit of critical thinking. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to seamlessly connect my Apple Calendar to my Google Calendar, enabling integration with ChatGPT. It solves the problem of real-time syncing between Apple and Google calendars by providing a live connection in the background. ### 12. Effortless Scheduling with Intuitive Interface **Rating:** 5.0/5.0 stars **Reviewed by:** Joseph S. | Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through a business email account added to their profile **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 22, 2026 **What do you like best about OneCal?** I really like OneCal for its easy user interface, which is very straightforward and not at all like a puzzle. It makes everything very easy and even offers good suggestions. Another feature I find valuable is the calendar sync, which is essential for me since I have five calendars that all need to be in sync. The initial setup was also very straightforward and easy. Overall, OneCal is very good at doing its job. **What do you dislike about OneCal?** nothing **What problems is OneCal solving and how is that benefiting you?** OneCal helps me keep my meetings and personal life aligned without overlaps by syncing five calendars, making sure they all work together seamlessly. ### 13. Effortless Multi-Calendar Syncing That Prevents Double Bookings **Rating:** 5.0/5.0 stars **Reviewed by:** Rudhra B. | Technical Solutions Engineer, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 23, 2026 **What do you like best about OneCal?** OneCal makes syncing multiple calendars effortless. It's simple to set up, reliable, and helps prevent double bookings by keeping all my work and personal calendars up to date automatically. **What do you dislike about OneCal?** I haven't run into any major issues so far **What problems is OneCal solving and how is that benefiting you?** OneCal keeps my multiple work email calendars in sync automatically, preventing double bookings and saving me time on manual calendar updates. ### 14. Synchronizing multiple calendars that changed my life **Rating:** 5.0/5.0 stars **Reviewed by:** Antonio M. | Account Manager, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from Italian using AI. **Reviewed Date:** August 20, 2026 **What do you like best about OneCal?** I can synchronize different calendars and this saves me a lot of work: it changes my life because the different companies I work with can see all my commitments and can schedule meetings with a clear view of my real availability. **What do you dislike about OneCal?** The calendar lacks week numbers. **What problems is OneCal solving and how is that benefiting you?** I am a freelancer and work with multiple companies. The problem is that my colleagues from different companies can always see my real availability. ### 15. Seamless Calendar Sync, Effortless Setup **Rating:** 5.0/5.0 stars **Reviewed by:** William R. D. | Senior Salesforce Manager, Mid-Market (51-1000 emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 23, 2026 **What do you like best about OneCal?** I like that OneCal is very simple to set up, and it just works. I appreciate that it instantly syncs my work calendar with my personal Gmail calendar, so I don't have to worry about missing meetings. It's especially easy for the older people on my team to use, which is a big plus. **What do you dislike about OneCal?** Nothing so far! **What problems is OneCal solving and how is that benefiting you?** I use OneCal to sync my work calendar with my personal Gmail, so I don't miss meetings. It consolidates all my calendars instantly, unlike my work calendar which takes forever to sync on its own. ### 16. Really Simple and Easy to Use **Rating:** 5.0/5.0 stars **Reviewed by:** Alex S. | Sales Representative, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 21, 2026 **What do you like best about OneCal?** Really simple and easy to use. Other programs like this were unnecessarily complicated - this is not that Getting way more value for the price **What do you dislike about OneCal?** Rarely events will take a long time to sync or not sync at all **What problems is OneCal solving and how is that benefiting you?** I am a sales rep and sometimes sell multiple products. This helps organize everything I might be juggling + personal stuff. Does it all seamlessly ### 17. Effortless Scheduling, Seamless Calendar Integration **Rating:** 5.0/5.0 stars **Reviewed by:** Kevin B. | Missionary, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through Google using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 14, 2026 **What do you like best about OneCal?** I love OneCal for its ability to remove the chaos of scheduling across different time zones and schedules. By simply sending a link, people can book meetings with me, which eliminates double booking issues and keeps everything in sync. I appreciate how it organizes both my personal and professional life, preventing me from missing important events like my kid's preschool graduation. The ease of use has significantly reduced my stress. OneCal integrates seamlessly with my calendar and blocks off unavailable times automatically. It syncs perfectly with my Mac, and setting it up was a breeze, taking only ten minutes. The integration with the Google ecosystem and the ability to use it within emails is amazing, giving recipients an easy way to book time with me. Highly recommended, especially for those coordinating with others across various locations. **What do you dislike about OneCal?** Nothing, it is great! I know I am supposed to have some criticism but I have had no issues. **What problems is OneCal solving and how is that benefiting you?** OneCal simplifies scheduling across time zones by consolidating calendars, preventing double bookings, and reducing chaos. It integrates with my calendar and email, saving time, reducing stress, and keeping me organized. It's great for meetings with multiple people, all over the place. ### 18. Effortless Multi-Calendar Syncing with OneCal **Rating:** 5.0/5.0 stars **Reviewed by:** Brandon M. | Digital Products & CRO Consultant, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 11, 2026 **What do you like best about OneCal?** I really appreciate how OneCal solves my need to have all of my calendars synced, so I'm not double booking time on my calendar. It's super easy to set up, and I found the user interface very nice to work with. Once I signed up, I had everything syncing in just a few minutes. I also like how, even after I've changed my setup a few times, it quickly removes the old sync events and creates the new ones. It was very easy for me to get up and running in 10-15 minutes. I also love that I can sync more than five calendars across personal and several businesses. Based on my experience, I've already recommended it to others. **What do you dislike about OneCal?** A few suggestions: Allow for multiple calendar 2-way syncs with different colors for each calendar's events. Currently, it shows all synced events as one color, which makes it hard to decipher what event is for which calendar. There is a workaround, but it makes for more one-way syncs. I'd also suggest a pricing model where you pay per calendar. I'm currently on the tier for 5 calendars, but need 6. Going to 6, the price jumps substantially. **What problems is OneCal solving and how is that benefiting you?** I use OneCal for syncing 5+ calendars across personal and business use. It solves my need to have all calendars synced, preventing double booking. ### 19. Seamless, Easy Setup and Effortless to Use **Rating:** 4.5/5.0 stars **Reviewed by:** Darren L. | Owner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 26, 2026 **What do you like best about OneCal?** Easy to set up, easy to use, and has always been seamless. Love OneCal, and haven't found any better alternatives. **What do you dislike about OneCal?** Sometimes it errors out and doesn't sync properly, but a quick sync refresh always fixes the issue. **What problems is OneCal solving and how is that benefiting you?** I have multiple company emails and multiple calendars, and there isn't a good solution to sync across calendars other than with OneCal. ### 20. Easy Setup and a Lifesaver for Managing Multiple Emails and Calendars **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 02, 2026 **What do you like best about OneCal?** Not only is it easy to set up but it has been a lifesaver juggling many different emails. (I have different emails because as a consultant different companies have different email requirements.) I am now able to see all my calendars combined into one master calendar that I can access from my phone. **What do you dislike about OneCal?** I have not come across anything that I don't like. **What problems is OneCal solving and how is that benefiting you?** I have several work calendars as well as my personal calendar. On top of that, some clients use Microsoft while others use Google, so it was hard to see everything in one place. Now, regardless of which email is used for a meeting invitation, I will see it in my master calendar. Also if I put something in my personal calendar it blocks off the time or day for me across all the work calendars! ### 21. OneCal Makes Managing Multiple Calendars Easy **Rating:** 4.5/5.0 stars **Reviewed by:** Matt W. | Co Host, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 15, 2026 **What do you like best about OneCal?** Its simple to setup and get started and really does take the pain our of managing multiple calendars. I tried building my own automations and piloted some other tools, but OneCal just seemed to work the best. It's competitively priced, integrates with Google calendars, Microsoft and Zoom, updates calendars quickly and its new MCP server allows AI integration which is a real boon. **What do you dislike about OneCal?** there is a jump in pricing but that is often the way. **What problems is OneCal solving and how is that benefiting you?** I manage multiple calendars that i need to keep my availability synced across, and this does it perfectly. ### 22. Effortless Sync with OneCal **Rating:** 5.0/5.0 stars **Reviewed by:** Arian Sheremeti B. | Principal GRC Consultant, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I like that OneCal solves the problem of double bookings for me as a freelancer with multiple email accounts. It books meetings across all my calendars automatically, which is a major benefit. I use OneCal daily and appreciate how easy it is to set up and not have to look back. It's very reliable and integrates well with platforms like Microsoft 365 and Google Workspace, replicating calendar entries almost simultaneously across different calendars. I also appreciate the privacy settings, which allow me to keep my details private across calendars. The platform is intuitive, step-by-step, and I've experienced no downtime or issues. I've renewed my subscription because it continues to meet my requirements well. **What do you dislike about OneCal?** N/A **What problems is OneCal solving and how is that benefiting you?** OneCal solved double booking by syncing all my calendars, making it easy to manage appointments across platforms like Microsoft 365 and Google Workspace. It set up quickly, I never had to adjust it again, and bookings replicate instantly. I also appreciate the privacy settings. ### 23. OneCal Simplifies Calendar Management Effortlessly **Rating:** 4.5/5.0 stars **Reviewed by:** Chris S. | Founder & CEO, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I like that OneCal syncs very seamlessly with all of my calendars. It lets me put meetings on any of them depending on what type of meeting it is, which is not something many competitors offer. It helps me manage my calendars and my time better. The built-in buffer time is really nice, and overall, it provides the flexibility and power to help across all the different things I do with my days and evenings. It works really well with Google Calendar and Outlook, and I use it on my iPhone, where the app is pretty nice. Switching from Reclaim to OneCal was a good decision because OneCal syncs more seamlessly, especially with my Outlook calendars. The initial setup was extremely easy—just put in the calendar, set up the syncs, and it's up and running. **What do you dislike about OneCal?** I would love more bespoke integrations to tools like HubSpot and my other platforms that I use. It would be nice if it actually had a better interface to HubSpot. Yes, it can do it through Zapier, but I prefer a direct integration. **What problems is OneCal solving and how is that benefiting you?** OneCal syncs all my calendars, including personal, business, and university, allowing seamless management. It helps me schedule meetings flexibly and includes buffer time, improving my calendar coordination effortlessly. ### 24. Easy setup, set and forget kind of tool **Rating:** 5.0/5.0 stars **Reviewed by:** Sami A. | Founder, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** I just like the ease of use and the fact that it's pretty much a set and forget tool. You can configure the sync once and then that's it. Additionally, I really like and appreciate the customization options available, which allow you to get complex and avoid syncing certain events using color labeling, codes, or specific event title names. That functionality is very critical and important to me. **What do you dislike about OneCal?** I think the mobile app is not really useful for me right now. Also, the booking links aspect is not useful because I use a different tool for managing my bookings. I would like the option to just subscribe to calendar sync and not subscribe to all the other features. **What problems is OneCal solving and how is that benefiting you?** I use OneCal for syncing multiple calendars. It automates updating my availability, giving me a clear view of my schedule. It makes planning easy and allows clients to book meetings easily. ### 25. Fast, Seamless Google Agenda–Outlook Sync with a Great UI **Rating:** 5.0/5.0 stars **Reviewed by:** Jerome D. | Foudner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 05, 2026 **What do you like best about OneCal?** I've tried many solution of calendar synchronisation between google agenda and outlook :this one works like a charm. the UI is really nice and the integration is very fast **What do you dislike about OneCal?** Nothing ; its doing the job : the pricing is fine **What problems is OneCal solving and how is that benefiting you?** As a consultant, i need to have a synchronized calendars both in my own compagny agenda and in the agenda provided by my customers ### 26. Seamless Calendar Synchronization for Multiple Roles **Rating:** 5.0/5.0 stars **Reviewed by:** Seema P. | Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I use OneCal for syncing between three different calendars - day job, my own business, and personal calendar. It solves the big problem of not double booking across different parts of my life. I also appreciate not having to manually cross-check calendars while maintaining privacy on my day job calendar. OneCal just works as it's supposed to, which is great. It creates clones so I can see what's going on without looking at multiple calendars, and it creates meeting links with helpful headings and titles. The initial setup was smooth. **What do you dislike about OneCal?** I find that sometimes clones don't edit immediately but so far, nothing that has created real life problems. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to sync three different calendars, preventing double bookings and maintaining privacy for my day job. It lets clients book appointments easily, shows all schedules in one place, and creates helpful meeting links with clear titles. ### 27. Seamless Scheduling Across Multiple Calendars **Rating:** 5.0/5.0 stars **Reviewed by:** Claas E. | President, Non-Profit Organization Management, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** It's seamless. If you have multiple calendars, it takes away any juggling or concern. **What do you dislike about OneCal?** Create custom appointment calendars (like when I am hiring and I need to open up evening more for initial calls) is not intuitive. But, that's probably more a bkc issue anyway. **What problems is OneCal solving and how is that benefiting you?** I've had as many as 4 different calendars (personal, one for an interim CEO role, two different consultancies I worked for) at the same time. Not having to think twice about updating calendars is a dream. And the set up a meeting function is great - let's me block meetings at 20 minutes on the half hour, creating natural buffers. ### 28. Seamless Multi-Calendar Syncing at a Reasonable Price **Rating:** 5.0/5.0 stars **Reviewed by:** Tom H. | Co-Founder, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 16, 2026 **What do you like best about OneCal?** Syncing across multiple calendars feels really seamless and hassle-free. **What do you dislike about OneCal?** No complaints with OneCal. Reasonable pricing. **What problems is OneCal solving and how is that benefiting you?** Juggling multiple calendars is a lot easier now. I have two Outlook accounts and two GMail accounts, and this saves me from double-booking myself. ### 29. Efficient Multi-Business Scheduling, But Lacks Visual Appeal **Rating:** 5.0/5.0 stars **Reviewed by:** Mike A. | Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 01, 2026 **What do you like best about OneCal?** I use OneCal to manage my bookings across five different businesses, each with its own email address. I like how it cross-checks bookings and blocks off time across all my calendars, which helps avoid any duplicates. It works really well for keeping my schedule organized. I was using Calendly before, but now I use OneCal for my booking links, and it syncs well with Google Calendar. **What do you dislike about OneCal?** It looks really chaotic because it replicates the event five different times on all the different calendars I use. Just it's not visually appealing, but it works. So it's functional, but that's my only feedback. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to manage bookings across five businesses with different email addresses. It cross-checks and blocks duplicates on my calendar, preventing scheduling conflicts and ensuring smooth operation. ### 30. Simple Setup and Management - Would Reccomend! **Rating:** 4.0/5.0 stars **Reviewed by:** Haleigh L. | RevOps Manager, Mid-Market (51-1000 emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 19, 2026 **What do you like best about OneCal?** OneCal is very simple to set up and manage. It doesn’t make things any more complicated than they need to be, which is quite refreshing these days. It integrates well with G Cal and is easy for our users to set up and use. Does exactly what we need it to do which is sync calendars! **What do you dislike about OneCal?** Honestly, nothing. It is super easy to use and manage and does everything we need it to do. No complaints here. **What problems is OneCal solving and how is that benefiting you?** We have two business units with two domains so OneCal lets our sales users sync calendars to prevent double bookings. ### 31. Clean, Fast, and Great Value with Evolving Features **Rating:** 5.0/5.0 stars **Reviewed by:** Hamish L. | Photographer, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** The clean layout and constantly evolving features make it really easy to navigate and great value. It has good integrations with other websites and really quick to load as well. It's made my ROI really high and works great. **What do you dislike about OneCal?** There's nothing I dislike, it would be cool to have some AI integrations with things but it not at all necessary **What problems is OneCal solving and how is that benefiting you?** The ability to be able to book in and show clients my availability, it saves me emails. The initial setup process was easy and definitely helped to make sense of things. It's great that I can brand it too. ### 32. Single Calendar View with Smart Free/Busy Sharing **Rating:** 5.0/5.0 stars **Reviewed by:** Tone S. | owner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 02, 2026 **What do you like best about OneCal?** I love that it provides a single calendar view and that it has the option to only share free/busy info across calendars. **What do you dislike about OneCal?** nothing, really! The price seems a little high, but yet it's still well-worth the investment. **What problems is OneCal solving and how is that benefiting you?** It allows me to share only free/busy info across multiple calendars. this is important due to contractual limitations. ### 33. Easy Cross-Platform Sync with a Great UX **Rating:** 4.5/5.0 stars **Reviewed by:** Karine J. | Propriétaire, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** It’s easy to set up synchronization, it works well across multiple platforms, and the UX design is great. **What do you dislike about OneCal?** Calendars don’t always sync in real time between them, so I have to trigger the sync manually. Also, we can’t add a buffer to the sync, which is a must-have and something the team really needs to work on. **What problems is OneCal solving and how is that benefiting you?** I didn’t report any issues to the team, so there wasn’t really a solution provided on their side. I did mention the buffer time in sync; it isn’t on the roadmap right now, but they were encouraging about the feedback. ### 34. Effortless Calendar Sync for Freelancers **Rating:** 5.0/5.0 stars **Reviewed by:** Reilly M. | Quality Assurance and Control Technician, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 15, 2026 **What do you like best about OneCal?** I use OneCal for calendar sync as a freelancer with multiple calendars, and I love that it's quick, efficient, and keeps my calendars all in one place. It's very easy to set up and use, which makes it a great tool for managing my schedule. One of the big benefits is that it allows all my teams to see up-to-date calendar times, keeping everyone aligned. **What do you dislike about OneCal?** When looking at all my calendars at once, I see 4 events each. On mobile, especially if I have an all-day event, I see 4 events for 'busy', then I have to click and see the actual event. **What problems is OneCal solving and how is that benefiting you?** I use OneCal for calendar sync, allowing all my teams to see up-to-date calendar times. It's quick, efficient, and keeps my calendars all in one place. ### 35. Reliable Calendar Syncing Across Multiple Platforms **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Validated Reviewer:** Validated through Google using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 22, 2026 **What do you like best about OneCal?** I like that OneCal makes sure my calendars are appropriately blocked across different accounts, reducing the risk of being double booked. It works so that I don't have to worry about overlapping appointments. I also like that it's really reliable, meaning I don't have to consciously think about it once it's set up. Plus, it's very easy to initially set up, which is always a plus for me. **What do you dislike about OneCal?** It's a bit expensive for what it is **What problems is OneCal solving and how is that benefiting you?** OneCal syncs my calendars across all accounts, preventing double bookings and ensuring my availability is accurate. It's reliable, so I don't have to worry about it. ### 36. Seamless Two-Calendar Event Sync **Rating:** 5.0/5.0 stars **Reviewed by:** Sudhir J. | Owner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 26, 2026 **What do you like best about OneCal?** The Sync of events between 2 different calendars **What do you dislike about OneCal?** The prices are still high, so please review them properly. **What problems is OneCal solving and how is that benefiting you?** It’s solving my double calendar booking issue. ### 37. Onecal Made Calendar Sharing Across Accounts Effortless for Our Family **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Oil & Energy | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 07, 2026 **What do you like best about OneCal?** Onecal is simple to set up accross your accounts. It immediately starts sharing your calendars across all your chosen calendar apps. Prior to this, I had constant problems trying to overlap my work and personal timetables. Our family just couldn't find one source of the truth for all the activities we were doing. Onecal solved this for us, and we have never looked back. **What do you dislike about OneCal?** I don't, once it is set up, it stays in the background doing exactly what I need it to do. It just works. **What problems is OneCal solving and how is that benefiting you?** If you have multiple calendars but can’t bring them all into one place to see everything in a single program, this software does that for you. You simply tell it which calendars you want reflected in the master calendar, and it takes it from there. ### 38. Effortless Sync Across Calendars, Saves Time **Rating:** 5.0/5.0 stars **Reviewed by:** Matt W. | CEO / Founder, Computer Software, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 16, 2026 **What do you like best about OneCal?** I really like how OneCal is completely effortless, and it has stopped double and triple booking between my calendars. Setting it up was very easy, and most of the time, it just works effortlessly. **What do you dislike about OneCal?** Every once in a while, and I mean like every few months, I have to go in and manually rerun the sync between the calendars. But it's almost unnoticeable. Most of the time, it just works effortlessly. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to sync multiple Google calendars for each client and my personal one. It solves my scheduling conflicts by seamlessly syncing events, preventing double bookings. It's completely effortless and has stopped double and triple bookings between my calendars. ### 39. Seamless Calendar Integration Across Platforms **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** September 16, 2026 **What do you like best about OneCal?** I love that OneCal is seamless, incredibly easy to use, and fast. It solves real problems by integrating calendars across multiple projects with Outlook, Google, and Apple, keeping everything in one place. The booking links that reference all calendars and the multi-calendar protocol (MCP) availability are super useful for managing my schedule. The initial setup was incredibly easy too, and I feel like it has everything I need right now. **What do you dislike about OneCal?** N/A **What problems is OneCal solving and how is that benefiting you?** I use OneCal to integrate calendars across Outlook, Google, and Apple, keeping them in one place. It provides booking links referencing all my calendars and allows MCP availability, enabling smoother coordination. ### 40. Effortless Multi-Calendar Sync That Prevents Overbooking **Rating:** 5.0/5.0 stars **Reviewed by:** Chris R. | Chief Operating Officer, Food & Beverages, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through Google One Tap using a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** OneCal makes it easy to manage multiple calendars across different accounts while preventing me from overbooking. OneCal's focus on calendar synchronization makes it extremely easy to use, and the service is reliable beyond belief at a reasonable price. **What do you dislike about OneCal?** I have used many competing products and have not found anything to dislike about OneCal. **What problems is OneCal solving and how is that benefiting you?** When I create meeting links for different calendars, I no longer have to worry about double-booking or manually blocking time out on other calendars. I can also see everything in OneCal's app to stay on top of everything! ### 41. Seamless Multi-Calendar Sync That Just Works **Rating:** 5.0/5.0 stars **Reviewed by:** Arek J. | Country IT and Digital Lead | IT Director, Information Technology and Services, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I really like OneCal for its seamless experience and the fact it just works. I appreciate how it allows multi-to-multi calendar synchronization, making it possible to synchronize my work, private, and business calendars effectively. I also find the initial setup to be quick and easy, which is a huge plus. After trying multiple calendar tools, OneCal is the first one that actually works for me. Seeing events from my unshareable work O365 calendar, in my private Google Calendar, also makes a big difference. **What do you dislike about OneCal?** synchronization of updated events is sometimes bumpy. **What problems is OneCal solving and how is that benefiting you?** OneCal synchronizes my work, private, and business calendars. It lets me see events from my work O365 calendar in my private Google calendar. It offers a seamless experience and effective multi-to-multi calendar synchronization. ### 42. Streamlined Scheduling with OneCal’s Multi-Calendar Sync **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Performing Arts | Small-Business (50 or fewer emp.) This reviewer's identity has been verified by our review moderation team. They have asked not to show their name, job title, or picture. **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account added to their profile **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 22, 2026 **What do you like best about OneCal?** OneCal has made it possible for me to connect several of my separate calendars, which has helped streamline my schedule and speed up my productivity. **What do you dislike about OneCal?** OneCal only lets you connect more than a handful of calendars if you pay for a higher-priced subscription. **What problems is OneCal solving and how is that benefiting you?** I put all of my daily meetings and tasks into one system, which helps me spend less time planning and more time doing what I love. ### 43. A proxy between accounts for simple synchronization without duplicates **Rating:** 5.0/5.0 stars **Reviewed by:** Simone C. | Agente di commercio professionista, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from Italian using AI. **Reviewed Date:** June 01, 2026 **What do you like best about OneCal?** The application functions as a Proxy between the connected accounts, allowing me to "play" with synchronizations without having to worry about creating duplicates or leaving traces between old and new settings. Priceless in my opinion. **What do you dislike about OneCal?** Currently, it does not integrate the management of Outlook categories (microsoft365), so it is not possible to choose the colors of events copied to Outlook. On the Windows app/OWA side, the default is gray, and on the Android app side, it is the same as the calendar... not always easy to recognize "on the fly" compared to work appointments. **What problems is OneCal solving and how is that benefiting you?** For work, I use the Microsoft environment; for private life, I use the Google environment. I have been looking for calendar integration without issues and at a reasonable price for a long time. ### 44. Multi Calendar Sync with Handy Color-Coding **Rating:** 5.0/5.0 stars **Reviewed by:** Ken D. | Business owner, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through a business email account **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** July 19, 2026 **What do you like best about OneCal?** I love being able to sync multiple calendars into one and the ability to color code appointments based on which calendar they’re associated with. **What do you dislike about OneCal?** I haven’t found anything to dislike, that’s why I subscribed. **What problems is OneCal solving and how is that benefiting you?** Syncing multiple calendars to one and being able to classify each by color. ### 45. OneCal is the solution I have been looking for! **Rating:** 5.0/5.0 stars **Reviewed by:** Jeanine A. | Director of Operations, Law Practice, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 12, 2025 At G2, we prefer fresh reviews and we like to follow up with reviewers. They may not have updated their review text, but have updated their review. **What do you like best about OneCal?** The ability to sync multiple calendars so I can stay on top of my life is really important to me. It made it much easier than other products I tried. **What do you dislike about OneCal?** Sometimes the instructions on how to do things aren't that clear, but if you look it up on youtube, you can find what you are looking for, just takes some extra steps. **What problems is OneCal solving and how is that benefiting you?** I am a consultant and have multiple client calendars to manage with my own. OneCal has simplified the way I do that. ### 46. Seamless Calendar Sync and Time Saver **Rating:** 5.0/5.0 stars **Reviewed by:** Kaitlyn M. | Freelance Marketing Consultant, Marketing and Advertising, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I love how OneCal acts as a bridge between all my different calendars, keeping them synced and accurate at any time, which saves me from the nightmare of managing multiple calendars. I also appreciate how it saves me time with its easy-to-use booking links, making scheduling effortless. The sync setup was incredibly easy and clear, and it has saved me a lot of time in the long run. The service team is really great too; they've been easy to work with, and their responses were really good and helpful, always getting back to me quickly. **What do you dislike about OneCal?** NA **What problems is OneCal solving and how is that benefiting you?** OneCal seamless syncs all my calendars, ensuring accuracy and saving me time. It's easy to schedule calls with its booking links, streamlining my workflow. ### 47. Seamless Multi-Calendar Sync with the Right Level of Privacy **Rating:** 5.0/5.0 stars **Reviewed by:** Mats U. | GTM Academy Advisor, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** This review contains authentic analysis and has been reviewed by our team **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** June 03, 2026 **What do you like best about OneCal?** As an independent consultant this helped me sort out availability across multiple calendars (personal, my business, client calendars) in a seamless fashion with the right level of privacy. **What do you dislike about OneCal?** My only wish is that the standard plan could have covered my need for three calendars. **What problems is OneCal solving and how is that benefiting you?** I was entering manual blocks across my client calendars to keep them up to date on my availability, now it's seamless and automatic. ### 48. Simple and Fast Calendar Synchronization **Rating:** 5.0/5.0 stars **Reviewed by:** Roberto M. | Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through a business email account added to their profile **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from Italian using AI. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I really like the simplicity of using OneCal. In just 3 minutes, I can synchronize the calendars and obtain a single booking link that allows checking availability across multiple calendars. It was a simple process. **What do you dislike about OneCal?** Nothing specific, perhaps one thing I would like to have is the ability to synchronize contacts as well, not just calendars. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to synchronize my Google calendar with Microsoft's, solving the problem of appointments on different calendars. I like the simplicity of the system, with which I synchronize the calendars in 3 minutes and get a single booking link that checks availability across multiple calendars. ### 49. Solve my multiple calendars and keep working smoothly for years **Rating:** 5.0/5.0 stars **Reviewed by:** Victor B. | Chief Marketing Officer, Small-Business (50 or fewer emp.) **Current User:** The reviewer uploaded a screenshot or submitted the review in-app verifying them as current user. **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from Spanish; Castilian using AI. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** It solves the problem of having multiple calendars and, even after several years, it continues to work smoothly. **What do you dislike about OneCal?** The price seems a bit high to me, and the issue of being able to add it to my page to get appointments with potential clients also needs improvement. Right now, I don't quite remember what it was missing, but I think it had to do with automatic redirection. **What problems is OneCal solving and how is that benefiting you?** My calendar now works perfectly ### 50. Instant Synchronization, Needs More Customization **Rating:** 4.5/5.0 stars **Reviewed by:** Hugo V. | General Practitioner **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **AI Translated:** This review has been translated from Spanish; Castilian using AI. **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** The synchronization is instant, the setup was very easy to do, and it also allows me a calendar view that hides duplicates, making it much simpler to look at. **What do you dislike about OneCal?** There could be more customization regarding the different types of calendars, such as which one you would like to use as the main one, or how to synchronize each one. To be able to do this, a large number of synchronization methods must be used, and that has a higher cost. Using all-to-all synchronization is a bit more unspecific. **What problems is OneCal solving and how is that benefiting you?** Allows synchronizing all my calendars, avoiding overlapping appointments. The synchronization is instantaneous, easy to set up, and shows a view that hides duplicates, simplifying visualization. - [View OneCal pricing details and edition comparison](https://www.g2.com/products/onecal/reviews?section=pricing&secure%5Bexpires_at%5D=2026-09-30+00%3A02%3A12+-0500&secure%5Bsession_id%5D=4a8248a6-53bb-4299-9759-31bcfad73995&secure%5Btoken%5D=ba11f005dc8b9f077e3d32686c79dc0db236dada4d4746f8e9db7d236b44cbcb&format=llm_user) ## OneCal Features **Additional Functionality** - Third-Party Integrations - To-Do List - @mentions - Single Sign On - File Management - Activity Dashboard - Drag & Drop - Alerts/Notifications - Prioritization - Access Controls/Permissions - Screen Sharing - Content Management - Brainstorming - AI Copilot - File Transfer - Calendar Management - Status Tracking - Real-Time Notifications - Version Control - Task Management - Activity Tracking - Real Time Editing - Communication Management - Chat/Messaging - Tagging - Generative AI - Assignment Management - Task Scheduling - Project Management - Collaboration Tools - Workflow Management - Secure Data Storage - File Sharing - Document Storage - Task Progress Tracking - Discussions/Forums - Commenting/Notes - Reporting & Statistics - Contact Management - Video Conferencing - Progress Tracking - Mobile Access - API - Document Management - Customizable Branding **Calendar View** - Multi-Calendar View - Customizable Viewing **Shared Calendar** - Calendar Collaboration - Multiple Calendar Management - Event Calendar - Availability Management - Event Management - Email Management - Appointment Management - Attendance Management - Booking Management - Timesheet Management - Task Management - Employee Management **Accessibility** - Screen Reader Compatibility - Keyboard Shortcuts **Integration** - Sync Multiple Calendars - Import Events - Software Integrations - Third-Party Integrations - Website Integration **Notifications** - Customized Calendar Notifications - Location-Based Alerts - Alerts/Notifications - Mobile Alerts **Generative AI** - Generative AI **Agentic AI - Calendar** - Cross-system Integration - Calendar/Reminder System **Additional Functionality** - Address Book - Class Scheduling - Customizable Templates - Email Reminders - Scheduling - Customizable Reports - Real-Time Reporting - Access Controls/Permissions - SMS Messaging - Automated Scheduling - Task Scheduling - Facility Scheduling - Reminders - Attendance Tracking - Customer Database - Collaboration Tools - Customizable Branding - AI Copilot - Room Booking - Real-Time Data - Electronic Payments - Customizable Forms - Calendar Sync - API - Customizable Fields - Drag & Drop - Color Codes/Icons - Event Scheduling - Real-Time Updates - Activity Tracking - Reporting & Statistics - Activity Dashboard ## Top OneCal Alternatives - [Calendly](https://www.g2.com/products/calendly/reviews) - 4.7/5.0 (2,558 reviews) - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) - 4.6/5.0 (45,694 reviews) - [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) - 4.5/5.0 (3,454 reviews)