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JC

Justin C.

Solutions Architect

Small-Business (50 or fewer emp.)

10/17/2025

"Exceptional Support and Fast Onboarding with Koncert"

5/5

What do you like best about Koncert?

We absolutely love using the Koncert calling platform! Working with Victoria and Krystal has been a fantastic experience — their quick response times, deep product knowledge, and genuine dedication make every interaction smooth and productive. Thanks to their support, our teams and our clients’ teams are up and running faster than ever! Review collected by and hosted on G2.com.

What do you dislike about Koncert?

I don’t have any concerns or negative feedback to share. The platform has met our needs consistently, and the team’s responsiveness and expertise make it easy to recommend Koncert. Review collected by and hosted on G2.com.

What problems is Koncert solving and how is that benefiting you?

Koncert has helped streamline our outreach and call management processes by providing a powerful platform that integrates seamlessly with HubSpot. Despite its robust feature set, the setup process has been incredibly intuitive, and the training provided by the Koncert team made adoption smooth and efficient for our teams and clients. This combination of thoughtful design and hands-on support has allowed our teams to get up to speed quickly and maximize productivity from day one. Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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Thank you for sharing your positive experience with Koncert! We're delighted to hear that our platform and team have met your needs so effectively. It's great to know that our seamless integration with HubSpot and our hands-on support have helped streamline your processes and maximize productivity. We appreciate your recommendation and are here to support you every step of the way.

ES

Erica S.

GTM Engineer & BD Lead

Small-Business (50 or fewer emp.)

11/4/2025

"Incredible Pickup Rates and Smart Filtering Make Cold Calling a Breeze"

5/5

What do you like best about Koncert?

I really like that you can filter by people most likely to pick up, and I have also found that people just generally pick up more often than if I call from one of the competing dialers. Reps at Koncert are very helpful, quick to respond & happy to jump on a call if needed.

Couldn't be easier to use. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

No downside other than now I have no excuse not to cold call haha Review collected by and hosted on G2.com.

LC

Lysander C.

Enterprise SDR

Small-Business (50 or fewer emp.)

7/22/2025

"Fast, responsive, and dialed into SDR success"

4/5

What do you like best about Koncert?

Koncert integrates seamlessly with HubSpot and makes outbound prospecting fast and consistent. But what truly stands out is the Customer Success team, they are hands-down one of the most responsive I’ve worked with. Whether it’s via email or through their Office Hours, I’ve always gotten clear, fast guidance. It genuinely feels like they’re invested in our success.

From a performance standpoint, the low latency makes a huge difference. You’re connected almost instantly, avoiding that awkward “hello, hello?” delay. They’ve also been consistently improving the platform, adding smart features and working to differentiate from other dialers in the market. It’s clear they’re building with feedback in mind. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

Honestly, there’s nothing major to dislike. The product delivers on what it promises. If anything, I’d love to see future enhancements like native scrubbing or enriched contact previews—maybe even something like an embedded LinkedIn iframe—so I can stay in the zone without needing to switch tabs mid-call. But those are just forward-looking ideas, not drawbacks. Review collected by and hosted on G2.com.

What problems is Koncert solving and how is that benefiting you?

Koncert helps me consistently execute high-volume outbound outreach without sacrificing quality or speed. As an SDR, I rely on fast connect times, and Koncert’s low-latency dialing eliminates the awkward delays that typically slow reps down. It’s also solving the problem of visibility and consistency in my workflow—automated call tracking tied into HubSpot ensures I never lose track of follow-ups. Overall, it saves time, reduces manual effort, and boosts my connect rate. Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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We're thrilled to hear that Koncert has helped you with fast and consistent outbound prospecting, low latency dialing, and automated call tracking. We appreciate your feedback and are committed to continuously improving our platform to meet the needs of our users.

TA

Timothy A.

Sales Development Representative

Mid-Market (51-1000 emp.)

11/20/2025

"Efficient for High-Volume Calling, but Room for Improvement"

3.5/5

What do you like best about Koncert?

Koncert is helpful in calling high volumes of users, quickly, very helpful for call recordings as well generating the Ai summary of what the conversation was regarding. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

Koncert can randomly stop working, and be a bit buggy. Also, I am not sure if it is always using #s that don't get marked as Spam. Hard to find prior conversations as well when you don't remember the name of the contact. Review collected by and hosted on G2.com.

PK

Preston K.

SDR

Small-Business (50 or fewer emp.)

9/18/2025

"Strong Dialer With Helpful Automation and CRM Sync"

4.5/5

What do you like best about Koncert?

Strong CRM integration that keeps call data synced automatically

AI dialers that reduce idle time and boost connect rates

Caller ID Management improves pickup rates with prospects

Support team is responsive and helpful Review collected by and hosted on G2.com.

What do you dislike about Koncert?

User interface could be more modern and intuitive

Initial onboarding and campaign setup take time to learn

Reporting dashboards lack flexibility for deeper insights Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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Thank you for sharing your feedback on Koncert! We're thrilled to hear that you appreciate our strong CRM integration, AI dialers, and responsive support team. We understand your concerns about the user interface, onboarding process, and reporting dashboards. We are continuously working to improve these areas to provide a more intuitive and efficient experience for our users. Your input is valuable to us, and we will take your suggestions into consideration for future updates. If you have any specific suggestions or need assistance with anything, please feel free to reach out to our support team. We are here to help and ensure you have a seamless experience with Koncert.

AC

Verified User in Computer & Network Security

Mid-Market (51-1000 emp.)

7/9/2026

"Creates Tons of Efficiencies and Helps the Team"

5/5

What do you like best about Koncert?

It creates tons of efficiencies and helps the team Review collected by and hosted on G2.com.

What do you dislike about Koncert?

I think it could have better ways to create reports from lists that have already been uploaded Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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We're thrilled to hear that Koncert is solving lead generation problems for you and benefiting your team.

JP

Jonathan P.

Guest Lecturer

Small-Business (50 or fewer emp.)

5/18/2025

"After 10,000 dials - Easy to use, Awesome Caller ID Hygiene, Best Price, Amazing Customer Service!"

5/5

What do you like best about Koncert?

It's an amazing priced tool that helped me book 34 meetings from just 5 hours of calling per week in March of 2025! Any question I had, the customer support team nailed it fast. And I used to use connect and sell's dialer. This is 10x better and way better on my wallet. This is better than Nooks too. I'm connecting with 1 in 5 dials all week long. This week I had 1 in 3 dials. The secret is their caller ID hygiene. I was integrated into Hubspot and dialing within minutes. I use it every day now and reached my $10k MRR under 60 days. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

I wish I had found them sooner. There is absolutely nothing I don't like. It's better and more capable than Nooks too. Review collected by and hosted on G2.com.

What problems is Koncert solving and how is that benefiting you?

Zoominfo's dialer let me down. Connect and sell's dialer is extremely expensive and the software was buggy. Nooks tries to look to fancy and is bloated with useless features. Koncert is the best priced tool on the market and I am able to generate meetings very quickly because of this software. Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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Thank you for your glowing review! It's great to hear that our caller ID hygiene and integration with HubSpot have been instrumental in your success. We are committed to continuously improving our tool to meet our customers' needs. If you have any further questions or feedback, please don't hesitate to reach out. Thank you for choosing Koncert!

ML

Mikes L.

Senior Accountant

Information Technology and Services

Small-Business (50 or fewer emp.)

9/5/2025

"Koncert; The Choice for Centralized Sales Engagement. Visible Insights"

4.5/5

What do you like best about Koncert?

Koncert streamline our sales outreach and engagement

All form of marketing communication and business engagement are covered using this app

We have automated the email sequence and call process

The visible dashboard ensure prioritization in tracking performance and lead enhancement Review collected by and hosted on G2.com.

What do you dislike about Koncert?

Sales rep or administrators finds Koncert having a steady learning experience that needs high training

Koncert lacks powerful integration support Review collected by and hosted on G2.com.

What problems is Koncert solving and how is that benefiting you?

We obtain accurate sales outreach using Koncert, a formation that helps us manage emails and calls

We get consistent messaging approach, where we track every conversation for satisfaction with our customers

We identify the promising opportunity or prospect, prioritizing it for outreach strategies Review collected by and hosted on G2.com.

BF

Ben F.

Head of Sales

Small-Business (50 or fewer emp.)

11/11/2025

"Easy-to-Use Dialer That Saves Money and Scales Effortlessly"

5/5

What do you like best about Koncert?

Dialing at scale, easy to use, saving me tons of money. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

A little confusing at first but aside from that it's the best dialer. Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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Thank you for sharing your positive experience with Koncert! We're thrilled to hear that our dialer is helping you connect with more people and book more meetings efficiently. We appreciate your feedback about the initial confusion and will work on making the onboarding process even smoother for our users. If you have any specific suggestions on how we can improve, please feel free to reach out. We're here to support you every step of the way as you continue to scale your efforts. Thank you for choosing Koncert!

NO

Nicholas O.

Account Executive

Mid-Market (51-1000 emp.)

9/15/2025

"Koncert G2 Review"

4.5/5

What do you like best about Koncert?

Premium, personalized onboarding and ongoing support provided by the team. Review collected by and hosted on G2.com.

What do you dislike about Koncert?

Occasionally noticed some lag or delays between calls, which can slightly impact the flow of conversations. Review collected by and hosted on G2.com.

Response from Koncert Marketing of Koncert

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Thank you for highlighting the benefit of reaching decision-makers quickly and at scale with Koncert. We're committed to helping our customers overcome the challenges of connecting with key contacts.