Fourth Frontier is a pioneering health tech company that builds and offers products and services for monitoring and improving heart health for people across the world. ------------------------------------------------- Frontier X2, our revolutionary patented product that provides real-time feedback on heart health to users on the move. Take control of your hearth health with the world's first smart heart monitor.If you need more information on our device and would like to speak to one of us regarding that, please book a demo call.Book a demoCalculate your heart score and get personalized insightsTake our quiz
Fourth Frontier (fourthfrontier.com) has 371 customer reviews on Five Star Index, with an average rating of 4.4 out of 5.
Also known as
fourthfrontier.com
Website
fourthfrontier.com
Category
Chemicals & Plastic
Listed on Five Star Index
2026
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The company replied to 97% of reviews.
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Most recent review: October 2026.
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Fourth frontiers customer service is second to none they reply same day you have any questions,are really helpful and work with you to resolve any problems you may have Banti Kumar went above and beyond helping with issue I had, absolutely brilliant the whole customer service is 5* . hopefully you will not need them but if you do they deal with it not fob you off well done to them.
Response from Fourth FrontierAug 6, 2026
Thank you so much for your wonderful feedback!
We're thrilled to hear you had such a positive experience with our support team. We'll be sure to share your kind words with Banti. We truly appreciate your support 😊
MW
Michael W.
High Quality Data, and superb Customer Service: Recommended
I had always trained with a "dumb" HRM to monitor effort and training zones but also to watch for possible a-fib tachycardia spikes and ectopic beats. At home, I used a finger plate EKG monitor which, while effective, showed only a 30 second non-effort snapshot. Fourth Frontier has changed the way I train and let's me monitor any arrhythmias . I have recommended it to a lot of endurance athletes and cardiologists and they have all found it compelling. My most recent positive experience was with Sneha Shetty at the company who helped me when a switch component failed after the warranty period but the company still helped me out in a most efficient manner
Response from Fourth FrontierAug 5, 2026
Thank you so much for sharing your experience!
We're delighted to hear the device has made such a positive difference to your training and heart monitoring. We'll be sure to pass your kind words on to Sneha. Thank you for your continued support and recommendation 😊
PS
Prasanna Simha Mohan R.
The product dos not work despite doing…
The product dos not work despite doing all the recommended things and kept giving poor-quality signal error. Also, the ECG, whenever I tried to check the signal, was terrible and not representative of my ECG ( I am a cardiac surgeon), and the R wave height was indecipherable!
I finally returned the device as it did not turn out to be reliable. They asked me to alter my review but I refused
Response from Fourth FrontierAug 3, 2026
Thank you for taking the time to share your feedback. We're sorry to hear about your experience with the device and the signal quality issues you encountered.
One of our Customer Support specialists has already reached out to you to better understand the problem and help resolve it. We kindly ask that you reply to their message so we can work with you directly. We're committed to resolving this for you as quickly as possible and ensuring you have the best possible experience with our product.
We look forward to hearing from you and resolving this at the earliest.
JS
Jeremy S.
First class technical backup
First class technical backup and customer support. I had an issue displaying my HR in my preferred indoor cycling App. I could connect but couldn’t display. I had an earlier Frontier monitor which I needed to replace as I dropped it and damaged it on a stone floor. The new unit required a different sequence of actions than I was used to. Raised a ticket for support and got a very rapid and helpful response. Plus further follow up to check things were working OK.
I have a heart arrhythmia which only kicks in occasionally on exercise so I need a monitor which can alert me of sudden HR change plus allow me to check the trace after exercise and keep specimen rhythm traces to show my cardiologist if required. I really recommend the Frontier monitor as a product and the technical support is excellent.
Response from Fourth FrontierJul 21, 2026
Thank you so much for your thoughtful review!
We're glad our team could help get everything working and that you're finding the device valuable for your training and heart health. We truly appreciate your recommendation and your kind words about our support 😊
AP
ANDY P.
Have used the Frontier X2 for several…
Have used the Frontier X2 for several years and it has been a reliable source of information given I cycle a lot. Recently I bought the new Frontier Zone and had some connectivity issues with my Wahoo Roam. The issue was quite subtle but was very efficiently solved by the technical support team (Sneha) and it now connects perfectly. Certainly the best and most useful HRM I have come across.
Response from Fourth FrontierJul 13, 2026
Thank you so much for your continued support over the years!
We're delighted to hear you're enjoying the Frontier Zone and that Sneha was able to quickly resolve the connectivity issue. We truly appreciate your kind words and recommendation 😊
SK
Sampath K.
Device not working as expected
Device not working as expected
Response from Fourth FrontierJul 9, 2026
We’re sorry to hear that the device isn’t working as expected. One of our team members will be reaching out to you shortly to understand the issue and assist you further.
TP
Toby P.
Amazing Support
I purchased the Frontier X Plus for my AFIB and was recording my AFIB episodes at night. I discovered I could not use the Frontier X app, only the Frontier X+ App for some reason. I ask support to explain why. The two apps feel like a legacy issue with an older app being phased out for a newer app. The Fourth Frontier Support Staff assisted me with new firmware that allowed me to use the Frontier X app. They were super supportive and it changed my perception of Fourth Frontier. Thank you Poonam for the great support.
Response from Fourth FrontierJul 6, 2026
Thank you for sharing your experience!
We're glad our team could help get everything working the way it should. We'll be sure to pass your kind words on to Poonam. Thank you for your support, and we're happy we could make your experience a positive one 😊
DH
Dave H.
I've finally given up!
I'm on my third device now and each and every one of them has had the same charging problems. I've finally given up. As tempting as it is to vent my immense frustration, with a 1* review, I'm going to keep it balanced.
What I like...
1) The functionality and data provided are excellent. I really like the ECG function. This sets the device apart from standard heart rate monitors. I've really enjoyed using it when it's working.
2) The customer support is first class. They respond to queries quickly and genuinely do what they can to resolve issues, often exceeding expectations. I've spent a long time talking with them over several occasions so can definitely vouch for that!
What I don't like...
1) The hardware just isn't up to the job. For three devices to have exactly the same issue is a big problem. It is so disappointing when such an innovative device is let down by something as simple as it just not being able to connect properly to a charger. I can usually get it to charge eventually but it takes multiple resets, shutting down and switching back on, different leads (and I've purchased good quality, branded leads to make sure it's not them), fiddling with the connection, coming back to it later and trying again. On average, it probably takes me an hour for it to start charging properly, so it can be left. It drives me mad! I'm no longer prepared to keep doing that.
2) The app can be a bit glitchy. It's got better with updates but I still quite often find that I need to come out of it and back in again, to get it to sync.
Their updated device has a new usb charging connection, which might fix things. I was tempted to buy one with an introductory offer but eventually decided not too. It's not a cheap monitor and it feels like too much of a risk if I just end up with more of the same.
It is with considerable regret that, after being unable to charge my latest device again this morning (and it's only seven months old), I have decided not to waste any more time messing about with it. I'll keep using it until the battery runs out and then revert back to a traditional heart rate monitor.
As much as I like Fourth Frontier and their product which is a technological step forward that I like, I have to cut my losses at some point and move on to something more reliable.
Response from Fourth FrontierJul 6, 2026
We’re glad to hear you’ve found value in the ECG data, and thank you for your kind words about our support team.
We’re sorry to hear about the charging issues you’ve experienced. The devices mentioned were replacement units provided as goodwill exceptions beyond the original warranty. One of our team members will be reaching out to review your current situation and see how we can best assist.