# OneCal Reviews **Vendor:** OneCal **Category:** [Calendar Software](https://www.g2.com/categories/calendar-software) **Average Rating:** 4.8/5.0 **Total Reviews:** 62 ## About OneCal OneCal is a tool that syncs iCloud, Outlook, and Google Calendars, provides intuitive booking links that make scheduling simple, and allows you to manage iCloud, Outlook, and Google Calendars in a unified interface. The service is cloud-based, so there is nothing to install, and the setup is very intuitive. Main features: • Calendar Sync: OneCal is the most advanced Calendar Sync software in the market. Sync multiple iCloud, Google or Outlook calendars in real time, reflect your availability, and keep your personal life private. • Booking Links: Effortlessly manage your appointments, meetings, and events with our user-friendly booking links. Say goodbye to tedious back-and-forth communication and confusion. • Unified Calendar: With OneCal Calendar View, you can view and manage iCloud, Outlook, and Google Calendars in one place, hide clones created by OneCal Calendar Sync, and much more. • iOS and Android Apps: Use all the OneCal features straight from your preferred device. ## OneCal Pros & Cons **What users like:** - Users love the **ease of use** of OneCal, praising its intuitive interface and seamless calendar syncing capabilities. (6 reviews) - Users value OneCal's **efficient scheduling** capability, ensuring seamless integration and reliable syncing of multiple calendars. (5 reviews) - Users find the **simple setup** of OneCal effortless, resulting in a seamless and efficient calendar management experience. (5 reviews) - Users value the **reliable syncing feature** of OneCal, ensuring calendars are consistently up-to-date and conflict-free. (5 reviews) - Users highlight the **easy setup** of OneCal, appreciating its quick configuration and seamless operation afterward. (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 and face inefficiencies when managing sync sessions in OneCal. (3 reviews) - Users find the **limit of 50 calendars and missing booking features** restrictive, complicating synchronization and event scheduling. (2 reviews) - Users find OneCal to be a bit **expensive** , particularly when connecting multiple calendars beyond five. (1 reviews) - Users are frustrated with the **pricing issues** , feeling the product is unresponsive and overpriced for its limited functionality. (1 reviews) - Users note **booking feature limitations** in OneCal, finding it less mature compared to competitors, impacting scheduling efficiency. (1 reviews) - Slow Performance (1 reviews) ## OneCal Reviews ### 1. Review **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.) **Reviewed Date:** May 08, 2026 ### 2. Solves scheduling conflicts across clients **Rating:** 5.0/5.0 stars **Reviewed by:** Sean C. | Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** August 07, 2025 **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 ### 3. 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.) **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. ### 4. 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.) **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. ### 5. Effortless Scheduling, Seamless Calendar Integration **Rating:** 5.0/5.0 stars **Reviewed by:** Kevin B. | Missionary, Small-Business (50 or fewer emp.) **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. ### 6. 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.) **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. ### 7. Effortless Sync with OneCal **Rating:** 5.0/5.0 stars **Reviewed by:** Arian Sheremeti B. | Principal GRC Consultant, Small-Business (50 or fewer emp.) **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. ### 8. OneCal Simplifies Calendar Management Effortlessly **Rating:** 4.5/5.0 stars **Reviewed by:** Chris S. | Founder & CEO, Small-Business (50 or fewer emp.) **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. ### 9. 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.) **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. ### 10. Seamless Calendar Synchronization for Multiple Roles **Rating:** 5.0/5.0 stars **Reviewed by:** Seema P. | Small-Business (50 or fewer emp.) **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. ### 11. 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.) **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. ### 12. 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.) **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. ### 13. 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.) **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. ### 14. 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.) **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. ### 15. 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.) **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! ### 16. 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.) **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. ### 17. 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.) **Reviewed Date:** August 12, 2025 **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. ### 18. 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.) **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. ### 19. Review **Rating:** 5.0/5.0 stars **Reviewed by:** Roberto M. | Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 ### 20. Review **Rating:** 5.0/5.0 stars **Reviewed by:** Victor B. | Chief Marketing Officer, Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 ### 21. Review **Rating:** 4.5/5.0 stars **Reviewed by:** Hugo V. | General Practitioner **Reviewed Date:** May 05, 2026 ### 22. Effortless Calendar Management for Teams **Rating:** 5.0/5.0 stars **Reviewed by:** Adam W. | Small-Business (50 or fewer emp.) **Reviewed Date:** March 26, 2026 **What do you like best about OneCal?** I like the integrated booking links in OneCal. I also like that it automatically distinguishes between meetings that require Teams and those that require Zoom. It allows me to coordinate multiple calendars in a single platform, which means I don't need to use other software like Calendly anymore. I found it very easy to set up and to add additional team members. **What do you dislike about OneCal?** One of the challenges is that recurring meetings that are moved don't often update properly. I think more reliable updates when recurring meetings shift would be very helpful. **What problems is OneCal solving and how is that benefiting you?** OneCal lets me see all my calendars in one place, eliminating the need for Calendly. I enjoy the integrated booking links and how it distinguishes between Teams and Zoom meetings, which helps me work from a single platform. ### 23. Consolidated Calendar View and Unlimited Booking Links That Just Work **Rating:** 5.0/5.0 stars **Reviewed by:** Keith M. | Law Business Success Coach, Mid-Market (51-1000 emp.) **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** I appreciate the consolidated calendar view and the unlimited booking links. **What do you dislike about OneCal?** Struggling with Outlook Integration - I've had a ticket open with support to fix a 1-hour timezone offset issue (during summer hours) that seems to be on the OneCal side. **What problems is OneCal solving and how is that benefiting you?** I love that they added a mobile app and a public calendar option ### 24. Effortlessly Syncs Multiple Calendars **Rating:** 5.0/5.0 stars **Reviewed by:** Robert M. | Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I use OneCal for work, and I really appreciate how it syncs all my calendars, both company and personal ones, while keeping their details private. I love that it just works without any hassle, and the team is always adding new features which make it better. Setting it up just took minutes of work, which was really convenient for me. **What do you dislike about OneCal?** The ical endpoint doesn't have a way to filter out cancelled meetings **What problems is OneCal solving and how is that benefiting you?** I use OneCal to sync multiple calendars, which keeps my work and personal schedules organized and private. ### 25. Simple Setup, Works Seamlessly in the Background. Super kind and effective support team! **Rating:** 5.0/5.0 stars **Reviewed by:** Alex A. | Network Marketing Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** February 26, 2026 **What do you like best about OneCal?** Very simple setup. It works and you forget about it. Perfect tool for business. **What do you dislike about OneCal?** I didn't experience any downside. It's simply ok for me. **What problems is OneCal solving and how is that benefiting you?** My problem was matching Teams Calendar (Corporate) and my Google Calendar (Personal). It was annoying appearing as available while having personal appointments. With OneCal, whenever I have something personal I book it in Google Calendar and the company knows I'm busy, so no one blocks any slots for me. Very helpful. Stress reduced! ### 26. Multi-Calendar Sync That Keeps Our Agency Organized **Rating:** 5.0/5.0 stars **Reviewed by:** Jason V. | VP Engineering and Data Science, Internet, Small-Business (50 or fewer emp.) **Reviewed Date:** May 06, 2026 **What do you like best about OneCal?** Multi-calendar sync keeps all my agency calendars in one place. It helps me stay organized across a variety of client projects. Love it! **What do you dislike about OneCal?** The app sometimes has auth issues, logging me out. It's not terrible, I just have to log back in again. **What problems is OneCal solving and how is that benefiting you?** I manage quite a few calendars because of my client projects. OneCal helps organize all that in one place and has the share links I'm looking for. Other tools were missing at least some of that functionality. ### 27. Simple Calendar Linking with Top-Notch Customer Service **Rating:** 5.0/5.0 stars **Reviewed by:** Kasey H. | Director of Marketing, Machinery, Mid-Market (51-1000 emp.) **Reviewed Date:** February 24, 2026 **What do you like best about OneCal?** OneCal is a very simple way to link all of your calendars into one. It's easy to implement, use, and update. I basically just had to set it once and never think about it again. And the customer service is absolutely top notch! Great product, great people. **What do you dislike about OneCal?** No downsides. This is a really great product. **What problems is OneCal solving and how is that benefiting you?** I have 4 different calendars, OneCal easily links them together. I can see and edit my schedule from all my calendars. ### 28. Effortless Calendar Sync Across Platforms **Rating:** 5.0/5.0 stars **Reviewed by:** Alexander L. | Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** November 28, 2025 **What do you like best about OneCal?** I really appreciate OneCal for its great user interface and ease of use, making it an efficient and user-friendly tool in our daily operations. The reliable syncing feature is incredibly valuable as it ensures that all calendar entries are consistently up-to-date, eliminating scheduling conflicts and simplifying the management of multiple calendars. Setting up OneCal is straightforward and quick, taking just a few minutes, which is a significant advantage when introducing it to new customers. Once configured, it operates seamlessly in the background, reducing the need for constant supervision. The ability to sync calendars across Google Workspace and Microsoft 365 (Outlook) is particularly useful for us and our clients, as it helps maintain clarity on availability across different companies and shared environments, like room calendars, which are often managed among multiple organizations. OneCal effectively addresses the challenge of managing multiple calendars, providing a streamlined solution that enhances productivity. Furthermore, with its high reliability and ease of setup, it offers a hassle-free and efficient tool that I would confidently recommend with a solid score of 10 out of 10. **What do you dislike about OneCal?** I find the limit of 50 calendars quite restrictive for some of our use cases, which makes it challenging when needing to manage more. Additionally, the absence of features to directly add or remove calendars from an existing sync session is inconvenient. Currently, if I want to change the calendars involved in a sync, I have to delete and set it up all over again, which is time-consuming and inefficient. **What problems is OneCal solving and how is that benefiting you?** I use OneCal to sync calendars between Google Workspace and Microsoft 365, avoiding scheduling conflicts and managing multiple calendars effortlessly. Its easy setup and reliable background syncing ensure seamless availability visibility across different companies. ### 29. Indispensable for a contractor with multiple clients and M365 accounts. **Rating:** 5.0/5.0 stars **Reviewed by:** Matthew S. | D, Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** It actually works, it was very simple to set up, and it saves me SO MUCH TIME. **What do you dislike about OneCal?** There are occasions when sometimes when meetings move around it might not pick up the changes, but you can resync to fix these and they are few and far between. **What problems is OneCal solving and how is that benefiting you?** I could not do without it. Otherwise I'd have to manually update four calendars, and I do not have time for that. ### 30. Sync Calendars without headaches **Rating:** 4.5/5.0 stars **Reviewed by:** Ross M. | Manging Membeer, Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** Syncs all calendars without programming. Integrates calendars that cannot be synced otherwise **What do you dislike about OneCal?** Cannot remove certain data that is repetative **What problems is OneCal solving and how is that benefiting you?** Rather then looking at numerous sites for my calendars - all synced ### 31. Effortless Calendar Synchronization Made Simple **Rating:** 4.0/5.0 stars **Reviewed by:** Scott D. | Enterprise (> 1000 emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I use OneCal for calendar synchronization, which helps me sync my Outlook and Apple calendars with Google, a feature I couldn't do natively. I like OneCal's simplicity, and the initial setup was very easy. **What do you dislike about OneCal?** Nothing it works perfectly **What problems is OneCal solving and how is that benefiting you?** I use OneCal for calendar synchronization; it lets me natively sync my Outlook, Apple, and Google calendars. I like its simplicity and it works nicely as described. ### 32. Easy to Coordinate and Keep Schedules Updated **Rating:** 4.5/5.0 stars **Reviewed by:** John H. | Small-Business (50 or fewer emp.) **Reviewed Date:** May 07, 2026 **What do you like best about OneCal?** Easy to coordinate, update and connect calendars. Especially useful for how bad MS is at syncing calendars across different org accounts. **What do you dislike about OneCal?** Blocking off days is still a cumbersome process with the need to select and verify each day instead of being to select a range of dates. **What problems is OneCal solving and how is that benefiting you?** Not having to worry about my availability not being updated regardless of which calendar I'm viewing. ### 33. Simple, Reliable Outlook-to-iOS Calendar Sync **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Writing and Editing | Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** I user OneCal only in its simplest mode to sync my Outlook calendar to my IOS devices. Simple, and works reliably **What do you dislike about OneCal?** A little pricey for my very basic use (just syncing one calendar, one way) **What problems is OneCal solving and how is that benefiting you?** The sync tool provided by Apple never worked as I needed; OneCal just solved the problem; works seamlessly ### 34. Granular Multi-Calendar Syncing, but not flexible enough **Rating:** 3.5/5.0 stars **Reviewed by:** Jeremy L. | Independent Consultant & Advisor, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** It does a really nice job of syncing numerous calendars with granular settings to define what attributes are shared. **What do you dislike about OneCal?** Any time you change, add, or remove a calendar, you have to delete and completely rebuild any sync involving that calendar. **What problems is OneCal solving and how is that benefiting you?** Syncing my personal, consulting business, and consulting client calendars to avoid conflicts. ### 35. Best Multi-Calendar Sync Tool for Selective Calendar Sync **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** May 09, 2026 **What do you like best about OneCal?** Simplicity in blocking off work calendar from personal calendar events without having to invite my work email. **What do you dislike about OneCal?** No dislikes! Everything thus far continues to improve and add features. **What problems is OneCal solving and how is that benefiting you?** Auto blocking off calendar without having to share private details between multiple accounts. ### 36. I can finally sync my personal and work calendars! **Rating:** 5.0/5.0 stars **Reviewed by:** Jenna P. | Executive Assistant, Small-Business (50 or fewer emp.) **Reviewed Date:** August 11, 2025 **What do you like best about OneCal?** OneCal is the only way I found to consistently sych my work (Outlook) and personal (Google) calendars. I tried all the suggested free methods and none were successful. I rely on both calendars and am so pleased I can see them together everywhere I look! I don't run a business, so I don't take advantage of the additional scheduling features OneCal offers...but the subscription is still a great value for the calendar syncing alone. **What do you dislike about OneCal?** Every now and then a random event falls through the cracks and doesn't sync properly. It's 95% seamless but I've had to start a new sync occasionally. Not sure what causes that! But OneCal is still the most reliable method I've found by far. **What problems is OneCal solving and how is that benefiting you?** I don't use most of its features so I can't give you any particular benefits. ### 37. A Helpful Scheduling Tool for Managing Patients **Rating:** 4.5/5.0 stars **Reviewed by:** Paula A. | Small-Business (50 or fewer emp.) **Reviewed Date:** May 11, 2026 **What do you like best about OneCal?** As a psychologist, I find it a very helpful tool for scheduling my patients. **What do you dislike about OneCal?** There are some integrations with Apple, and they’re improving them. **What problems is OneCal solving and how is that benefiting you?** I can schedule my patients using a simple link to my calendar. ### 38. Works as good if not better than other tools I have tried **Rating:** 5.0/5.0 stars **Reviewed by:** Chris C. | Owner, Small-Business (50 or fewer emp.) **Reviewed Date:** June 26, 2025 **What do you like best about OneCal?** Generally speaking, I wanted to say how well the app is working for me and some co-workers. We are all independent contractors and usually have corporate calendars provided by clients, plus our own businesses. after 3-4 weeks of testing I am starting to introduce it to other contractors I know. At this point I am using it daily and the updates to calendars with changes are reflected very quickly which is perfect. I've yet to find something it really doesn't do yet as long as you get creative with the sync models for both directions and what you want to be seen in the various endpoints. For me I end up having ALL the information shown in my own Biz Google Calendar as my single POV location but for the clients it's made things so much easier. They can truly see what my availability is in those specific corporate M365 calendars. Kudos to the app so far for simplifying my life and honestly not over complicating the app and adding bloat to it. I also started using the booking pages for various things per client like helping with interviews etc that is branded for that client as well with specific availability times to keep things from getting out of control. **What do you dislike about OneCal?** I really have yet to fins anything I dislike about it, honest and true. I have not said "I wish it did this.." One Co-Worker did mention the lack of IMAP account capability but that is not something that applies to me. **What problems is OneCal solving and how is that benefiting you?** As an independent consultant it's solving my client provided calendar issues with free/busy time 100%. I no longer need to push them to a booking page they can use their on internal tools to view my availability. It also allows me to limit the information shown in the client copies for privacy. ### 39. Affordable and User-Friendly **Rating:** 5.0/5.0 stars **Reviewed by:** Christina H. | Owner, Small-Business (50 or fewer emp.) **Reviewed Date:** August 11, 2025 **What do you like best about OneCal?** I've been using OneCal for a while now (on a daily basis), and I’m genuinely impressed with how intuitive and affordable it is! The interface is clean and modern, making it super easy to set up booking links and manage my schedules across multiple calendars (Outlook and iCloud). Very easy to implement and integrate into my business. The real-time sync feature has saved me from double-booking headaches more than once. I also love the customizable booking pages; they look professional and align perfectly with my brand. The pricing is a steal for all the features you get, especially compared to other scheduling tools. Plus, the support team is incredibly responsive and helpful. Highly recommend OneCal to anyone looking for a simple, cost-effective way to streamline their scheduling! **What do you dislike about OneCal?** None that I can think of. Support has always been able to help me with any issues that I have. **What problems is OneCal solving and how is that benefiting you?** OneCal solves the headache of managing multiple calendars and scheduling conflicts, which has been a huge time-saver for me. Its real-time, multi-way calendar sync ensures my Outlook and iCloud calendars are always aligned, preventing double bookings and keeping my schedule organized without manual updates. The intuitive interface makes creating different booking links a breeze, which streamlines client scheduling and looks professional. This has boosted my productivity by cutting out back-and-forth emails and letting me focus on my work. Plus, its affordable pricing means I get all these features without breaking the bank, making it a fantastic value for my small business. ### 40. Excellent and simple solution **Rating:** 5.0/5.0 stars **Reviewed by:** Kevin L. | Strategic Advisor and Founder, Small-Business (50 or fewer emp.) **Reviewed Date:** September 24, 2025 **What do you like best about OneCal?** OneCal excels at one straightforward task: it seamlessly integrates all of your calendars across various platforms, allowing you to truly take control of your schedule. While it offers several other useful features, such as calendar booking links, what I appreciate most is the ability to return to the fundamental benefit of having a single, unified calendar. **What do you dislike about OneCal?** There is absolutely nothing I dislike. OneCal is excellent in every way. **What problems is OneCal solving and how is that benefiting you?** For various reasons, I need to maintain four separate email addresses, which means I constantly face the challenge of monitoring all four calendars to avoid scheduling conflicts. Additionally, I consult for clients who do not permit their employees to access my availability from their own calendars. OneCal provides the functionality I need to overcome all of these challenges. ### 41. Does one thing, and does it right. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** May 05, 2026 **What do you like best about OneCal?** It does one thing and does it right. All I want is calendar sync, and it just works. **What do you dislike about OneCal?** I'd prefer an optional login (with a password) **What problems is OneCal solving and how is that benefiting you?** syncing calendars. ### 42. Exceptional Software, Exceptional Support **Rating:** 5.0/5.0 stars **Reviewed by:** Brandon K. | Founder - Partner, Small-Business (50 or fewer emp.) **Reviewed Date:** January 24, 2025 **What do you like best about OneCal?** The upsides far outweigh the downsides for most people in most cases. Super easy to use, FANTASTIC support, pretty easy to integrate and implement. Use it daily. The calendar sync function alone is worth the price and the UI is excellent. **What do you dislike about OneCal?** There are definitely some features that I don't love, but support has been so kind and receptive to feedback that I went out of my way to create an account for this platform (which I've never heard of and didn't want to do) just to leave a positive review. That should say something. Feature wise, mainly on the booking functions, they've said they'll work to implement almost everything I've asked for in coming months, but here's a few: - More customizable / personalizable booking link pages - Options to create categorized pages or separate pages - Easier visibility of simple things like finding your share link **What problems is OneCal solving and how is that benefiting you?** All my calendars sync seamlessly in a pleasing UI across ALL MY APPS. Bliss. ### 43. Expensive, slow, and clunky **Rating:** 0.0/5.0 stars **Reviewed by:** Verified User in Entertainment | Small-Business (50 or fewer emp.) **Reviewed Date:** August 11, 2025 **What do you like best about OneCal?** It poorly does what I need it to. I have nothing else that’s nice to say about this product. **What do you dislike about OneCal?** The price for the unresponsive software that I have to repeatedly unlink and relink my calendars. I have separate calendars for it to integrate to and they all say our version of (Clone), this should be an optional feature. **What problems is OneCal solving and how is that benefiting you?** Oval to google cal syncing. ### 44. A must have if you're an freelance consultant with tons of client calendars! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** April 03, 2025 **What do you like best about OneCal?** I love that I can both connect + sync my calendars and manage my booking links all in one spot. The customer service is very helpful. It was very easy to set-up and I like all the options for syncing my calendars **What do you dislike about OneCal?** It's a little pricey especially if you need to connect 5+ calendars **What problems is OneCal solving and how is that benefiting you?** I can sync all of my personal calendars and client calendars to each other and then have a booking link that reflects them all. Two in one magic! ### 45. Maintenance of calendars and appointments **Rating:** 4.0/5.0 stars **Reviewed by:** Amado C. | Onboarding Specialist, Government Administration, Small-Business (50 or fewer emp.) **Reviewed Date:** July 31, 2024 **What do you like best about OneCal?** I think OneCal in providing me with a comprehensive look at my possible schedules. I’ve noticed that clients can find the time which is suitable for both of us without numerous emails. This means no more constantly switching between Google and Outlook calendars. **What do you dislike about OneCal?** I am still left with no other option but to go for other software in other to ensure I manage my teams complex schedule. OneCal is not ideal in terms of group or team schedules. It is impossible to share availability with other teammates or coordinate team events. **What problems is OneCal solving and how is that benefiting you?** I love using OneCal for my personal calendar, it has been very helpful in ensuring I am on top of my schedule. I will not forget about any appointment that helps to avoid confusion with different calendars and guarantee. The booking links are one of the most efficient ways. ### 46. Managing all meetings and events at one place **Rating:** 5.0/5.0 stars **Reviewed by:** Marguerite F. | Graphics Designer, Graphic Design, Small-Business (50 or fewer emp.) **Reviewed Date:** May 14, 2024 **What do you like best about OneCal?** The working stretegy of Onecal is very great and helpful they help a lot to manage all our calenders at one place without any regreat. User interface and experience gives scalable user experience. **What do you dislike about OneCal?** They have numbers of integration avilable so we can connect Onecal with all of our mails accounts at single platform and manage all meetings shedule at one place. **What problems is OneCal solving and how is that benefiting you?** The main problem with me is I am skiped sevreal meetings or events of my company and I got in a hassle every time but now Onecal suggest all meenting and event t single calender and notify with joining time before. so they handle my all probles regarding calenders and take my responsibility at their own. ### 47. OneCal Saves Me Time!! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** May 06, 2024 **What do you like best about OneCal?** OneCal is the best service I have found for calendar synchronization and management. I synchronize seven calendars using a combination of Google Workspace and Office 365 calendars, and OneCal keeps everything in sync. It offers me an easy way to manage my busy schedule across seven engagements. Additionally, with the booking feature, I don't have to email back and forth to find a time to meet; I just give the booker a link. With all seven calendars cross-syncing, if an employee/customer/client at one of the domains looks at my availability, it is always up to date. Additionally, OneCal has a unified dashboard where I can see my availability cleanly, efficiently, and in one spot. The game changer is OneCal's customized booking links, each customized with a unique logo. In every email account, I have a personalized link that directs the booker to the specific domain calendar, ensuring that each client and customer feels they are receiving a highly individualized service, even though I'm managing seven different calendars. I have tried other services, and while they work well, none work as quickly and cleanly as OneCal. **What do you dislike about OneCal?** Nothing! It's a great service, and the support is excellent! **What problems is OneCal solving and how is that benefiting you?** Scheduling and synching across multiple calendars. ### 48. Complex events with multiple attendees **Rating:** 4.0/5.0 stars **Reviewed by:** Sara M. | Social Media Manager, Hospital & Health Care, Mid-Market (51-1000 emp.) **Reviewed Date:** May 20, 2024 **What do you like best about OneCal?** OneCal just like magic consolidates my work Outlook calendar with my personal Google calendar without the worry of double hosting. I can get rid of that unpredictability about events at which place I'm supposed to be to simply have total on OneCal calendar. **What do you dislike about OneCal?** The downside to it is that there's no mobile app integration available. The web interface of the tool is straightforward in function and user-friendly, but a lot of times when I control my program, I need to bounce between apps. The OneCal app would be a huge time saver, since now I wouldn't have to open my laptop to view or add events anytime. **What problems is OneCal solving and how is that benefiting you?** For OneCal, I would never lurk over the weekend or see booking conflicts. Notwithstanding the fact, I can now grasp with absolute clarity all the tasks in my roster for all the channels. This additional clarity has decreased my stress levels and increased my productivity. ### 49. Very useful to manage all schedule without any misunderstandings **Rating:** 5.0/5.0 stars **Reviewed by:** Wendy B. | Manager, Media Production, Mid-Market (51-1000 emp.) **Reviewed Date:** May 03, 2024 **What do you like best about OneCal?** Somtimes I just confused due to lots of emails and meetings remeders on my mail but the platform Onecal save my time and efforts both. Their ease touse interface gives an integration option to attch Gmail or Outllok accounts with Onecal and track and manage all meetings at one place. **What do you dislike about OneCal?** Their frequent use gives a reliability with great user experience without any new thread and we also able to manage all features asper our need. **What problems is OneCal solving and how is that benefiting you?** Very useful platform to manage all meetings or calender sheduled at one place they also provide reliable sections or number integration option to manage all meetings at one place. ### 50. Best tool to sync my all meetings at one place **Rating:** 5.0/5.0 stars **Reviewed by:** Barton A. | HR, Graphic Design, Small-Business (50 or fewer emp.) **Reviewed Date:** May 02, 2024 **What do you like best about OneCal?** The best part of their services is they support Gmail or Outlook both and there fast server responses make them super fast sync callender tool in the market. **What do you dislike about OneCal?** The user interface is very good and ease to use also they provide full recommendtion and guide to newly resigter user. I just integrate this tool with my bothemails accounts (Gmail & Outlook) and they workvery fine. **What problems is OneCal solving and how is that benefiting you?** I am always be confused with my upcoming meetings or deal but I got Onecal and now I just easily manage my all meeting and calender very easily without any hassle. - [View OneCal pricing details and edition comparison](https://www.g2.com/products/onecal/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-14+20%3A14%3A34+-0500&secure%5Bsession_id%5D=41afa75e-9aa1-4a2c-9c00-e4b6edd23ae0&secure%5Btoken%5D=1d5d76c92ad52494d87384821a728084eb4822eecc67ea6fea196d94557a7392&format=llm_user) ## OneCal Integrations - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) - [iCal](https://www.g2.com/products/ical/reviews) - [Microsoft 365](https://www.g2.com/products/microsoft365/reviews) - [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) - [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) - [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) ## OneCal Features **Calendar View** - Multi-Calendar View - Customizable Viewing **Shared Calendar** - Calendar Collaboration - Multiple Calendar Management **Accessibility** - Screen Reader Compatibility - Keyboard Shortcuts **Integration** - Sync Multiple Calendars - Import Events - Software Integrations **Notifications** - Customized Calendar Notifications - Location-Based Alerts **Agentic AI - Calendar** - Cross-system Integration ## Top OneCal Alternatives - [Calendly](https://www.g2.com/products/calendly/reviews) - 4.7/5.0 (2,546 reviews) - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) - 4.6/5.0 (45,387 reviews) - [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) - 4.5/5.0 (3,371 reviews)