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Construction & Manufacturing

Fourth Frontier

60 reviews

4.460 reviews
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About Fourth Frontier

Data updated
Website
fourthfrontier.com
Category
Construction & Manufacturing
Location
United States
Status
Unclaimed
Last 12 months
60 reviews
Replies to negative
100% (7/7)
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Is Fourth Frontier legit?

Fourth Frontier (fourthfrontier.com) has a 4.4 out of 5 rating on OK.one, based on 60 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is good. 81% of reviews are 4 stars or higher and 7% are 1 star; The business has replied to 100% of negative reviews. Last updated 2026-08-10.

What people say

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Prasanna Simha Mohan Rao · 1 review · Verified · Experienced 2026-07-22 ·

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 trued to check signal was terrible and not representative of my ECG ( I am a cardiac surgeon) and the r wave height was indecipherable !

Reply from Fourth Frontier2026-08-03

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.

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Jeremy Stock · 22 reviews · Experienced 2026-07-04 ·

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.

Reply from Fourth Frontier2026-07-21

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 😊

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ANDY PEARCE · 18 reviews · Experienced 2026-07-08 ·

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.

Reply from Fourth Frontier2026-07-13

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 😊

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Sampath Karunakaran · 1 review · Verified · Experienced 2026-07-01 ·

Device not working as expected

Reply from Fourth Frontier2026-07-09

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.

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Toby Payne · 1 review · Experienced 2026-07-01 ·

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.

Reply from Fourth Frontier2026-07-06

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 😊

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Dave Houchin · 120 reviews · Experienced 2026-07-01 ·

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.

Reply from Fourth Frontier2026-07-06

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.

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Jim · 2 reviews · Experienced 2026-06-19 ·

The Device Signal Drops Out Repeatedly

I’m very disappointed with the Fourth Frontier heart monitor. It constantly drops out and goes blank. Yesterday, for example, it dropped out more than 10 times in a one hour ride. I asked for a full refund and the company totally blew me off!!! It cost over $500 !!!!! It’s incredibly annoying and frustrating. My Garmin never drops out. I recommend against buying it.

Reply from Fourth Frontier2026-06-30

We’re truly sorry to hear about your experience and understand how frustrating these dropouts must be, especially during your rides. Regarding your refund request, we do have a 14-day return policy, and as your request was made several months after the purchase, we were unfortunately unable to approve a return. That said, we want to assure you that we are committed to helping resolve the issues you’re facing. One of our team members will be reaching out to you shortly to better understand the dropouts you’ve experienced, identify the root cause, and assist with the next steps toward a resolution.

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JanVanpraet · 7 reviews · Experienced 2026-06-17 ·

Not sure what people are complaining…

Not sure what people are complaining about the fact that heart rate is not connected to garmin devices or wearables. Have to admit that I had from get go an issue on that part, but had grat support from their CS team. Poonam, my contact in my case, was fast and concrete, but above all very friendly. Keep up the great work and of course I would strongly recommend their devices as the relevant data that other brands neglect are there ! Kudos from R&D all the way to customer service !!

Reply from Fourth Frontier2026-06-23

Thank you so much for your kind words and support! We’re glad our team could help resolve the issue and that you’re finding value in the data our device provides. We truly appreciate your recommendation and encouragement to the entire team 😊

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Adrian Fletcher · 4 reviews · Experienced 2026-06-16 ·

An excellent monitoring device.

An excellent device for measuring heart beats and breathing rates. I have had no problems with the device and believe it to be and very intelligent addition to the chest monitor market. Handy for sports research and fitness assessments and even monitoring medical conditions alike and the support I received from the company was excellent They are good at resolving issues in customer services and work together as a team of engineers and software developers to improve the product design in all areas. I am also looking forward to future developments in the software area and believe the company is one of the leaders in its area of expertise.

Reply from Fourth Frontier2026-06-23

Thank you so much for your thoughtful review! We’re delighted to hear you’ve had a great experience with both the device and our support team. Your encouragement means a lot to us, and we truly appreciate your support as we continue to improve 😊

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Terry Gilton · 1 review · Experienced 2026-05-01 ·

This company does things right

This company does things right. They have a unique and performant product that addresses a critical need among a large swath of people. It does medical level monitoring needs of heart rhythm patients and athletes that want all the data about their heart - not just the rate. Their software has improved dramatically in the last year and they are listening to customers. This last part, their customer service, is a strong point for them.

Reply from Fourth Frontier2026-06-23

Thank you so much for your thoughtful feedback! We’re thrilled to hear that you value both the product and the support experience. Your kind words about our improvements and customer service mean a lot to us, and we truly appreciate your support 😊

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Greg Rajkovic · 8 reviews · Experienced 2026-06-02 ·

Fourth Frontier Offers Great Products, Services and Customer Service

Fourth Frontier offers a product and service that has changed the way I manage my life. I have had Fourth Frontier X2 for nearly four years. It has worked reliably with nearly daily use. It has given me insights into my health which were unable to achieve with any other products. I had encountered a handful of software issues along the way, and support was fast to respond and provide guidance, or take the input to their developers for improvement. After nearly four years of using the unit, the hardware and solution proved reliable and effective, and I have decided to upgrade to the Frontier X Plus. There are no better products and solutions offered than with the customer service that Fourth Frontier provides, if you want to have the best insights into your cardiovascular health and fitness. While I am extremely fit and active, that alone was insufficient. I experience cardiovascular anomalies at times, such as AFib and palpitations, that are related to other aspects of my health. Having a solution that I can trust helps me know that I am managing those other health conditions well.

Reply from Fourth Frontier2026-06-04

Thank you so much for your continued trust and support over the past four years. We're delighted to hear that the device has provided valuable insights into your health and that our team has been able to support you along the way. It means a lot to us that you've chosen to upgrade to the Frontier X Plus. We truly appreciate your kind words and are grateful to be part of your health and fitness journey 😊

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Ron Kimura · 2 reviews · Experienced 2026-06-02 ·

As an 82 year old former triathlete…

As an 82 year old former triathlete I've always utilized heart rate training as invaluable. Last year I had a Medtronic AV2 and Watchman implanted and used my Frontier X2 as a guide to track asymptomatic AFib burden. Recently I had problems with the device not charging and re-contacted Poonam Agarwal with whom had helped me previously. After explain all the steps I had gone through Poonam sent me a mail back label to return the device for a replacement. In today's business climate, where people and companies give "promises to deliver", few deliver as well as Poonam and her Frontier team did. She (as the face of the company) deserves and receives 5 stars from a very satisfied customer !! I can't praise Poonam enough for her timely response, clear communication, and willingness to help in a professional manner. Thank you, Poonam, and the entire Frontier Team!

Reply from Fourth Frontier2026-06-04

Thank you so much for your wonderful feedback and for being part of the Frontier community. We're delighted to hear that Poonam and the team were able to assist you promptly and make the replacement process smooth. Your kind words mean a lot to us, and we'll be sure to share them with Poonam. Thank you for your trust and support—we truly appreciate it 😊

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Tushar Moghe · 1 review · Verified · Experienced 2026-05-22 ·

There is no proper app phone…

There is no proper app phone connection. The app is not very detailed. The parameter should also compare with benchmark like age waight and tell how I am performing among my fellow aged people.

Reply from Fourth Frontier2026-06-04

Thank you for your feedback. We’d love the opportunity to better explain the app, the available metrics, and how the data is intended to be interpreted. One of our customer support agents will be reaching out to you shortly to understand your concerns and answer any questions you may have. We appreciate your feedback and the suggestions you've shared.

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kpbDO kpbDO · 1 review · Experienced 2026-05-29 ·

Outstanding support and great device for those with history of SVT

Outstanding support. Great communication and went above and beyond to allow me to maximize the use of the Frontier X plus device. I didn’t realize how inaccurate and delayed my Apple Watch was in reporting my HR during HIIT and other training sessions. It’s a game changer for me as someone who underwent an ablation for SVT(AVNRT). The peace of mind and confidence this device allows is well worth the cost. Highly recommend.

Reply from Fourth Frontier2026-06-04

Thank you so much for the kind words! We’re thrilled to hear the device has helped you train with greater confidence and provided the peace of mind you were looking for. We truly appreciate your recommendation and are glad our team could help you get the most out of your Frontier X Plus 😊

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Poornima Krishnamoorthy · 1 review · Verified · Experienced 2026-05-12 ·

Nice innovative and simple usage

Nice innovative and simple usage, as per your promise. Thanks for delivering it with respect with my choice and purchase.

Reply from Fourth Frontier2026-05-28

Thank you so much for your kind words! We’re glad you’re enjoying the experience and truly appreciate your support 😊

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David Morgan · 44 reviews · Experienced 2026-05-20 ·

Poonam tried to help me on a daily…

Poonam tried to help me on a daily basis with trying to resolve my new Frontier Zone connection problems. After trying various instructions from Poonam, neither solved the problem, with either connecting with my Garmin 1030 plus cycling computer, or Frontier X on my Apple 16 Pro phone app. Eventually, I managed to solve the problem myself, by updating the software on the Frontier X app on my phone. This allowed me to connect with my Garmin computer and Frontier X app on my phone.

Reply from Fourth Frontier2026-05-28

Thank you for sharing your experience. We’re glad the issue is now resolved and appreciate your patience throughout the troubleshooting process. Also happy to hear Poonam could assist you along the way 😊

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Alexander MacDonald · 1 review · Experienced 2026-05-26 ·

A giant Hoax in every way. for cycling it has disconnected every time. When my Garmin 1050 says Connected to Fourth HRM, no HR data on screen. No freaking support number. Unbelievable wast of money.

I took this mountain climbing. No data. Three bike rides and it disconnects itself — maybe 4 seconds of data. When trying to connect to Garmin 1050, it says Fourth Frontier Connected — add relevant screens? Of course but main screen is blank for HR. No support number. Incredibly disappointed, and because I’m now past the 14 day refund period, no recourse. Maybe these idiots will see this and call me.

Reply from Fourth Frontier2026-05-28

We’re really sorry to hear about your experience and understand your frustration. This is definitely not the experience we want you to have with the device. Our support team will be reaching out to you directly to review the connectivity concerns in detail and help work toward a resolution.

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Tom Cody · 8 reviews · Experienced 2026-05-11 ·

Outstanding product with awesome data, a great website, but most importantly a fantastic support team.

My experience with the Fourth Frontier support team was outstanding. They were very responsive and got back to my every inquiry or question. My initial X2 device was having some difficulty charging, though it required some back and forth, the support team sent me a new device that worked perfectly and also is charging perfectly, which the original never did effectively. The data that the X2 delivers it outstanding. My doctors have used it to look at what happens with my workouts. It works very well with my Garmin products and also works effectively with my Apple products. I'm very happy.

Reply from Fourth Frontier2026-05-18

Thank you so much for sharing your experience! We’re really glad we could get everything sorted and that the device is working well for you now. Appreciate your kind words and support 😊

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Liam · 8 reviews · Experienced 2026-05-11 ·

I had a problem with the battery

I had a problem with the battery. It was not accepting a charge. Poonam gave a detailed instructions to deal with the issue. Poonam also suggested a new cable. A new cable worked. Extremely good communication from the support team who were genuinely interested in solving the problem.

Reply from Fourth Frontier2026-05-18

Thank you for sharing your experience! We’re really glad the team could help get things working again and appreciate your kind words about the support 😊

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Brian Dowding · 1 review · Experienced 2026-05-03 ·

Best after sales support possible!

We imported a Frontier X Plus ECG Monitor to South Africa after hearing good reports from my son in New Zealand. My wife is suffering from Afib. Once arrived it was put into action and performed well, but consistently reported low battery when below about 70%. After a firmware update it decided to stop working. This was discussed with Frontier support and the fault was shared during one of FF's face to face video meetings. The result was that FF immediately dispatched a complete replacement from the United States. In my book good service can't get better than that. Well done FF and thanks for great support.

Reply from Fourth Frontier2026-05-05

Thank you for sharing this! We’re really glad we could get a replacement to you quickly and that the support experience met your expectations. Wishing your wife all the very best, and we truly appreciate your kind words 😊