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
About these reviews
Replies
The company replied to 97% of reviews.
Latest
Most recent review: October 2026.
Edits
Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
Score
This company cannot pay to remove reviews or change its score.
I had a question about how the device worked and they answered all my concerns. Great group of people and a very good customer service
Response from Fourth FrontierJun 28, 2023
We're thrilled to hear that our customer service team was able to address all your concerns and provide you with the information you needed about how the device works. We strive to have a great group of people who are knowledgeable and dedicated to assisting our customers. Your positive feedback about our customer service is greatly appreciated. If you have any further questions or need assistance in the future, please don't hesitate to reach out. We're here to provide excellent support!
DA
David
Better than a smart watch for keeping…
Better than a smart watch for keeping track of my heart! This devices gives some incredibly detailed graphs and charts including a pretty high quality EKG. My gripe with smart watches is that you have to hold the watch with both hands to get an EKG and that too a short 30 sec view. Since this is worn on the chest it can pick up your EKG hands free. The other metrics such as heart rate, breathing rate, starin are pretty handy too, especially because I can set alerts for them and don't have to keep looking at a watch.
Response from Fourth FrontierJun 28, 2023
We're delighted to hear that you find our device to be better than a smartwatch for keeping track of your heart health! The detailed graphs, charts, and high-quality EKG provided by our device are designed to offer valuable insights. We understand your gripe with smartwatches requiring both hands to get a short EKG view, whereas our chest-worn device allows for a hands-free EKG recording.
In addition to EKG, the device also provides metrics such as heart rate, breathing rate, and strain, which can be incredibly useful. The ability to set alerts for these metrics eliminates the need to constantly check a watch, providing convenience and peace of mind.
Thank you for your positive feedback on the device's features and capabilities. If you have any further questions or need assistance, please don't hesitate to reach out. We're here to help you monitor your heart health effectively!
FE
Fede
Great
I think it is a really good device and app to increase your awareness of how your body reacts to your physical activity and what to do to improve your fitness.
I bought this product because I wanted to keep an eye on my fitness level. I enjoy hiking up mountains but sometimes I feel I get a very fast or irregular heartbeat. I have used in the past a Garmin watch, but unfortunately it only lasts for about five hours and my hikes are usually longer than five hours. This device last for days! I also do other sports and it is interesting to compare results across sports.
I really appreciate that it also links with my Garmin watch for checking the activity on the map and how my heartbeat and other information shows.
It is really cool that you can compare the information on one graph for the different data that the device captures.
It also works for indoor bike training on Tacs.
The best thing is the opportunity to have an ECG made in shared with your doctor or whoever else you want to share it with.
Sometimes I feel my heart is beating irregularly and you can actually highlight this moment through the device and it will therefore be quicker to find it on the ECG.
One thing I particularly like is the fact that the app sends you push notifications suggesting you how to train and at what level so to reach better results.
I have been curious enough to use it also at night to check how I am sleeping and that also provides interesting information.
Having it positioned around your chest doesn’t bother me at all.
An extra points is the service that you can interact with a practitioner who can read your results.
I think it is a really good device and app to increase your awareness of how your body reacts to your physical activity and what to do to improve your fitness.
Response from Fourth FrontierJun 28, 2023
Thank you for sharing your positive experience with our device and app! We're thrilled to hear that it has been helpful in increasing your awareness of your body's reactions to physical activity and improving your fitness.
It's great to know that the device's long battery life has been beneficial for your longer hikes, unlike your previous Garmin watch. The ability to compare results across different sports and activities is indeed interesting and allows for comprehensive tracking of your fitness progress.
We're glad that the device integrates with your Garmin watch, providing a seamless experience in checking activity on the map and correlating it with your heart rate and other captured information.
The ability to view all the data on one graph and easily highlight irregularities during moments when you feel your heart is beating irregularly is a valuable feature. Sharing the ECG with your doctor or anyone else you choose adds an extra level of convenience and support.
We're pleased to hear that the push notifications in the app help guide you in your training and provide suggestions for better results. The capability to monitor your sleep and gain insights from that information is also a valuable feature.
We appreciate your feedback on the device's comfort around your chest and the availability of practitioner interaction to interpret your results. It's wonderful to know that the device and app have contributed to your overall awareness of your body's responses and helped you improve your fitness.
Thank you for your kind words and recommendation. If you have any further questions or need assistance, please feel free to reach out. We're here to support your fitness journey!
VC
Verified C.
Comprehensive heart rate monitor
Directions were easy to follow, quick to set up and get started. I liked that the Bluetooth connection works very well and consistently. The device comes with two straps, which is handy. The monitor clips well to the adjustable strap.
Readings are relatively quick to synch with the phone, although you need to wait a bit longer for the graphs to be processed. It automatically uploads afterwards.
The price point is actually higher than other solutions out there. I liked having the option to be able to monitor my heart rate continuously; however, the ECG looks very small on the phone and it is a bit fiddly to move across as you can only scroll 20 seconds at a time.
It is pretty comprehensive, it will tell you % time spent on various heart rate zones, average heart rate, strain, beathing rate, heart rate variability and step cadence as well as % of heart beats that have a normal pattern vs abnormal.
Interestingly enough, when I pushed myself (did an eft test on my bike which should absolutely leave you spent), it was reassuring to see that my heart did not show any strain even when pushed to max. However, for a few days earlier this month, I got irregular heartbeats when I was resting when I felt my heart rhythm was out of sync. The device captured those. However, sometimes it is hard to see what is wrong as the beats seem regular but there is a marker on the ECG.
Generally pretty happy with the device. A couple of improvement points I would suggest are 1. better integration with Apple so that ECG loads up to apple heatlh profile 2. Ability to export data / print, especially the graphs. Btw it is possible to generate and email over the web platform.
Response from Fourth FrontierJun 28, 2023
Thank you for sharing your experience with our device! We're glad to hear that the directions were easy to follow and the setup process was quick. The reliable Bluetooth connection and the inclusion of two straps for convenience are great features.
It's good to know that the readings synchronize relatively quickly with the phone, although the processing time for the graphs may take a bit longer. The automatic upload feature adds to the convenience.
We appreciate your feedback on the price point and understand that it may be higher compared to other solutions. We're pleased that you found the continuous heart rate monitoring option valuable. However, we understand that the ECG display on the phone may be small, and scrolling through the 20-second increments can be a bit fiddly.
The device's comprehensive readings, including heart rate zones, average heart rate, strain, breathing rate, heart rate variability, step cadence, and the percentage of normal vs. abnormal heart beats, provide valuable insights into your heart health.
It's reassuring to see that your heart didn't show any strain even during intense exercise, and the device successfully captured irregular heartbeats during periods of rest. However, we understand that sometimes it can be challenging to identify issues when the beats appear regular but there is a marker on the ECG.
We appreciate your suggestions for improvement, particularly regarding better integration with Apple for ECG loading into the Apple Health profile and the ability to export or print data, especially the graphs. It's great to know that generating and emailing data through the web platform is already possible.
Thank you for your feedback and for sharing your overall satisfaction with the device. If you have any further questions or suggestions, please don't hesitate to reach out. We're here to assist you on your health monitoring journey!
AA
Alfred A.
Frontier X registers excellent single lead ECG, even during intense workouts
I use Frontier X, the first version, since 1 year now.
The device works surprisingly well. It produces a nice, stable single lead ECG approximately equivalent to V5 even during heavy training sessions. The online app adequately indicates premature ventricular beats and bigeminy. A registration during several hours at rest nicely shows the influence of caffeine or alcohol intake on the occurrence of premature beats. The device is also easily recognized by Zwift, so it is very useful for indoor sessions
Response from Fourth FrontierJun 28, 2023
We're delighted to hear about your positive experience with the Frontier X device, the first version. It's great to know that the device works well and produces a stable single lead ECG, comparable to V5, even during intense training sessions. The ability to monitor your heart's performance during workouts is valuable.
We're glad to hear that the online app accurately indicates premature ventricular beats and bigeminy, providing important insights into your heart's rhythm. The ability to observe the influence of caffeine or alcohol intake on the occurrence of premature beats during several hours of rest is a valuable feature for tracking your heart health.
It's fantastic to hear that the device is easily recognized by Zwift, making it a useful tool for indoor training sessions. The seamless integration with other platforms enhances the overall user experience.
Thank you for sharing your positive feedback about the device's performance and its usefulness in monitoring your heart health during training sessions and rest periods. If you have any further questions or need assistance, please feel free to reach out. We're here to support you in your health monitoring journey!
RS
RS
Useful Device, Quite pleased with the Frontier X2
I’m quite pleased with the Frontier X2. I really like the heart insights arrhythmia or abnormal rhythm pie chart that I get at the end of my workouts. I was concerned about PVCs in the past, so I’m glad to have a device that can help me monitor that during my workouts.
Response from Fourth FrontierJun 28, 2023
We're delighted to hear that you're pleased with the Frontier X2 device! The heart insights feature, particularly the arrhythmia or abnormal rhythm pie chart, provides valuable information at the end of your workouts. It's great to know that the device helps you monitor PVCs (premature ventricular contractions) during your workouts, addressing your previous concerns.
Having the ability to track and monitor your heart rhythm during physical activity can provide peace of mind and assist in maintaining your cardiovascular health. We're glad that the Frontier X2 is meeting your needs and helping you stay aware of any irregularities in your heart rhythm.
If you have any further questions or need assistance with the device, please don't hesitate to reach out. We're here to support you in your health monitoring journey!
BS
Brigitte S.
Interesting data!
The data I get from this device is super interesting - in particular continuous traces during exercise, breathing rate, heart rate and HRV. It’s fascinating to exercise and leave the device on for an extended recovery period. The graphs and charts in the web app make it easy to look through your workouts and see where you pushed yourself and how your body responded. Comparing HRV changes before and after exercise is interesting and helpful for exercise programming.
Response from Fourth FrontierJun 28, 2023
We're thrilled to hear that you find the data provided by the device super interesting and valuable. The continuous traces during exercise, along with metrics like breathing rate, heart rate, and HRV, offer insightful information. It's fascinating to track your workouts, analyze how your body responds, and compare HRV changes before and after exercise for optimizing your exercise programming. The user-friendly web app's graphs and charts make this process easy and informative. Keep up the great work and enjoy your fitness journey!
HA
HELOISE A.
I recently bought the Frontier X2 heart…
I recently bought the Frontier X2 heart rate monitor to track and understand more about my performance during various ways of training. I train 5-6 times per week with a mixture of cycling, squash, running and gym.
Unboxing the product is an excellent experience. They have QR codes for links to deeper information and a printed quick-start guide. They also have various videos on their channel explaining the entire process. Setting it up, creating an account and pairing it with my iPhone took less than 10 minutes. When two days later, I had to change my mobile, it was super-quick to sign in again, and all my data was there.
You can start the monitor with a physical button or from your mobile. If you do it from your mobile, you can choose the sport you are about to start. When you start it, it gives a buzz to confirm things are running. If you start it on the physical button, you can later in the app change what type of sport you did.
This device is incredibly accurate and provides real-time feedback on heart rate, allowing you to adjust your intensity and optimize your workouts. It shows heart rate, heart variable, breaths per minute etc. It also shows you how much % of your workout you spent in zone 1 through to zone 5, which I liked because it allowed me to see exactly how hard I train and if I am doing the right intensity for that workout. The data then integrates with the Apple health app.
Finally, a surprising feature is the workout summary that the app gives you. It tells you what that type of workout did to you, how many of those you should do per week etc.
Response from Fourth FrontierFeb 16, 2023
Thank you for leaving a 5-Stars review.
We at Fourth Frontier continuously strive to serve you better. We look forward to serving you in the future
