Fourth Frontier Reviews 374

Switched from my Polar heart strap to these guys a few weeks ago. I finally found something that can help me monitor how hard (and safely) I can push my cardiovascular system to gain ground in my 50's.
Any questions I've had during the transition have been answered the next morning. Much appreciated.

I purchased a Frontier X2 since I'm getting older and have a history of heart disease in my family. I exercise and play competitive sports as well. This was a great way to track my workouts as well as monitor for abnormal rhythms. Frontier has been super responsive and helpful along the way!

Frontier X2 is a unique medical device providing real time EKG for sharing with medical teams. Worn while sleeping, further insight into sleep apnea and cardiac stress can be identified. Pulse rate is highly accurate and far more reliable than other top fitness HR monitors, including Apple Watch Ultra 2 and Polar H10. Detailed and insightful reports can be shared via pdf file with care providers and they include helpful charts and graphs as well as significant cardiac data. For anyone with heart disease or interested in their health and fitness levels, particularly those doing aerobic or high intensity workouts, it is a must have. Less expensive and healthier that a few dinners out, it is an investment in your health and well being. Customer service is among the best of any vendor with rapid responses by people who care about your use of and benefit from the product.

Great customer service. I originally thought they were ignoring me, but I somehow put them on my Blocked email list. Once I corrected that they responded very quickly and escalated my ticket quickly and even set up a Google Meet VTC so they could walk me through all my steps.

I have been using my Frontier Monitor for 5 years with 700+ workouts recorded and I have a hard time imagining exercising without it. It shows how many minutes in each zone, HRV and now VO2 Max. I really like the two alarms, which I set for different % of max HR. Definitely best HR monitor on the market, and I have used many.

I have had problems with my monitor, but the support team has been very responsive and has agreed to take back my existing monitor and replace it with a refurbished one.

My initial experience, a couple of years ago with customer support wasn't that great, but boy have they turned things around! They responded to my email really quickly and with really good technical advice. It was first class service. Thank you Poonam!!

I initially thought that the Frontier X2 wouldn't be able to measure and display what I wanted. I was very wrong! I have only had the device a couple of days and it has met my expectations- and I don't think I've got to the bottom of it yet.

I got the device to be aware of health issues (AF) rather than sports related. The quality of the ECG printouts is outstanding. I managed to carry out a 17hr reading (including 8 hours of sleep).

The speed of delivery to the UK was as stated i.e. really quick and I had a helpful discussion with one of the helpers after ordering.

I look forward to finding out more about the Frontier X2 in the coming days.

My early impressions are really good. This looks like any similar heart rate montior, with a chest band containing electrodes. It's comfortable and easy to wear (you rapidly forget you have it on).

The difference is it records a continuous ECG rather than just measuring pulse rate. And it does it remarkably well. I'm a doctor, and I know how difficult it is to get a good quality ECG with a sweaty moving patient. Nonetheless, this system achieves it remarkably well. There is some noise/artefact on extremes of exercise, but so far my experience is nothing but positive.

20250107 UPDATE
after sending my considerations to the company, thanks to the interest of Sneha, who forwarded my query to the team, they agreed to replace the non-working device with a new one.
I just received the new frontier X2 today and I will try it as soon as possible, thank you so much.
All's well that ends well!

20241213
It wasn't a good experience!!
Please note that company policy, for their products, is to offer only 1 year warranty!!
I purchased the Fourth Frontier X2 at the price of Total: €400.76, on April 23, 2023, so 19 months ago.
I've always used it correctly, never in the water for swimming or other water sports (even if it is waterproof).
After 2 months from the purchase I started having problems, the device crashed very often and I have to reboot the device continuously, but at the end of November 2024 the device turned off and no longer worked.
I got in touch with the customer service and according to them the problem is the hardware; they proposed me a "special offer" dedicated exclusively to me.
They offered me a 30% discount, but considering that on their site they offer everyone a 25% discount, this means that the "special discount" for me is an extra 5%. Unbelievable!!!
No thanks, I will buy another device that offers more guarantees and above all from more serious companies and with different policies than yours.

Updated review - I was having heart issues so was very interested in the frontier x2 to monitor my heart over extended periods and during exercise.
However, my personal experience is that the x2 isn’t fit for purpose. At best it works intermittently, often not at all, and when it does record an ecg, it is basically unintelligible for practical purposes. Its performance is even worse when exercising.
I have liaised with the helpdesk a couple of times and reset the device but I’ve come to the conclusion that it can’t do what it says it can do. It is no more than a poorly performing run of the mill hrm at 10x the price.
Back to my garmin hrm when I exercise and the Kardia when at home

Frontier customer services eventually replaced my device. It’s reading as I would expect now but only 3* due to my experience

They sorted it out so I have adjusted the review.

For those of us who are aging-athletes with many decades of ultra-endurance training and competition and consequent cardiovascular issues, the metrics FF X2 provides are indispensable to be able to see in real-time. For me, those data, when combined with real-time measurement of muscle oxygen and watt output allow me to calibrate my work to enhance safety and fitness. To my knowledge, there are no other wearable monitors at the price point of the X2 and Premium subscription that can provide such data.

Quick background--I had been having some irregular heart beats during exercise and was looking for a way to investigate what was going on. Found the Fourth Frontier X2 online. I use it every time I workout now and also when I sleep. I have gotten a lot of great insight into my heart health and am quite happy with the product. The X2 is helping me and my doctor manage my newly diagnosed Atrial Fibrillation.

--The Heart Strain indicator is quite helpful. I have had the "buzz" on the device go off a couple of times. It tells me to lower my workout intensity.
--The heart rate is accurate--as compared with my Polar H10 strap and several manual counts.
--Breath rate is helpful information not supplied by other heart rate devices
--The HRV reading is helpful and compares very close to my Oura ring.
--Sleep data is impressive and compares very close to the Oura ring.
--The X2 could easily take the place of the Polar H10 strap and Oura ring.
--The App is intuitive and provides a lot of useful information.
--I love that the app will generate a PDF of the ECG that can be emailed to your cardiologist/doctor.
--I love that the X2 is charged via USB instead of a battery like the H10.
--Battery life is impressive--I have worn it all night while sleeping followed by 3 hours of use during exercise and have not gone below 70% charge. I once wore it for 18 hours and only got to 60% charge. The X2 charges in just a few minutes-much faster than my Apple watch.
--My cardiologist was enthusiastic about my use of the X2. He found the ECG data useful--especially because he could see what was happening during a specific activity. I had worn a 2 week monitor through him--but of course I didn't have any weird beats until after I turned in his device. The X2 ECG is helping to guide my treatment.

If you want to really learn about your heart health and what impact it, this is the device. I’ve used many health devices, and they all more or less give you the same data. While that data is informative, I wanted deeper insights into my heart health and Fourth Frontier does this better than any device I know. Yes, it’s on the pricier side and I was reluctant about that, but the great thing is that you can get a full, one-on-one demo. I talked with Vijay Kumar who took the time to walk me through what it does, answered all my questions, and made sure the device is a fit for my needs. I was looking for a device that would give me all-day readings, and he showed me exactly how it could do just that. So, the purchase was seamless. I never felt rushed or pressured. The device itself far outdid my expectations. I was nervous about whether the battery would give all-day readings, and it does. The readings give me much better insights into my heart function than any device I’ve tried. What’s even better is that you get a consultation with a real healthcare professional who helps you understand your readings. I learned more in that session than months and years of data from other sources and/or doctor visits. Both the mobile device and the desktop dashboard give you a lot of insights. Finally, in just the few months I’ve owned this device, they have updated and added features and services so that the device and the information continue to improve. As someone who loves to try out new tech and learn about my health through insights, I’m super impressed!

I've had lots of exercise monitors over the years but was looking for one with multiple and extensive features. The Fourth Frontier X2 is an excellent monitor providing me with all the stats I'm interested in for a heart monitor...as well as special features such as an indication of VO2 Max (with the premium membership). Also, customer service has been excellent vie email whenever I've had a question.

I can't find information on, what you call, 'Noisy signal/Not interprable 'Grey background'. The instrucion-picture does not show the 'Grey background' I find in my grafics?
Noisy signal can be an Technical matter or an Hartmatter or both!? I see this grey background on a regular base. I know the meaning of flags in the grafics. I have them alwais! That's wy I bought this device.

Placed order more the 2 weeks (delivery 3-5 days). Contacted via Live Chat. They would investigate and contact me back (no response for almost a week now) Filled in contact form... nor response. Not even that they received the form or that they would investigate.

Very poor customer support. On the product(s) itself I cannot comment, because I have not received them. But hey... they got the money. So why would they care...

The Frontier X is an excellent product, backed by a team that listens to its customers and responds promptly—a refreshing approach in today’s market. It may be the best heart rate monitor for fitness enthusiasts.

Not sure where all these other reviews have come from but in general, for a device that costs in excess of £350 - it's very poor.

I use the HRM for variety of exercises - mainly treadmill running, HIT and kickboxing. My main concern and issue is the amount of 'noisy rhythm' that gets reported, generally resulting in a useless and overpriced HRM unfortunately.

My past 4 activities have resulted in 27%, 40%, 30%, and even one activity had 80% noisy rhythm.

Customer service informs me of the usual tactics to ensure contact, proper position etc. But the amount of items that can seem to interfere with this device is crazy. Zips or metal on your workout gear, even static generated by your clothing can cause interference. For a device that costs this much, that is just plain ridiculous.

Back to Garmin and Polar it is.

The sales pith was good. But after the sale was supposed to get done furyher assistance re set up and setting parameters. Also called technical support. This was call centre in India, said they would email me the answer. No response for weeks. Device also gives spurious readings. Would not recommend