Selvom vi ikke verificerer specifikke påstande, fordi anmeldernes meninger er deres egne, kan vi godt betegne anmeldelser som "Verificerede", når vi kan bekræfte, at der har fundet en forretningsinteraktion sted. Læs mere

Af hensyn til platformsintegriteten scannes alle anmeldelser på vores platform – verificerede eller ej – af vores automatiserede software døgnet rundt. Denne teknologi er designet til at identificere og fjerne indhold, der overtræder vores retningslinjer, herunder anmeldelser, som ikke er baseret på en reel oplevelse. Vi er klar over, at vi måske ikke fanger alle problemer, og du er velkommen til at gøre os opmærksom på det, hvis vi har overset noget. Læs mere

Se, hvad kunderne siger

Bedømt til 5 ud af 5 stjerner

This is an important device to monitor my progress. I use it almost every day to track individual workouts. In addition I have worn it overnight to track my heart rate during sleep (once a month).... Se mere

Virksomheden har svaret

Bedømt til 5 ud af 5 stjerner

I bought this (Frontier X Plus) to monitor PVCs that I was having and try to determin the burden from them over period of rest and workout activity, walking etc. My physician ordered a 2 week patch m... Se mere

Virksomheden har svaret

Bedømt til 5 ud af 5 stjerner

Really good product! Up there with the best heart rate monitor on the market! Solid data with ECG recording capabilities! Customer service is top notch. The APP is user friendly! Definitely worth try... Se mere

Virksomheden har svaret

Bedømt til 3 ud af 5 stjerner

Product did not work for me. Kept getting noise in my data regardless of what I did spending time with Customer support. However the customer support team was extremely responsive, polite and accom... Se mere

Virksomheden har svaret

Virksomhedsoplysninger

  1. Bioteknologivirksomhed
  2. Fitness- og ernæringstjeneste
  3. Producent af medicinsk teknologi

Om Fourth Frontier

Skrevet af virksomheden

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 demo
Calculate your heart score and get personalized insights
Take our quiz

Kontaktoplysninger

4,4

Fremragende

TrustScore 4.5 ud af 5

362 anmeldelser

5 stjerner
4 stjerner
3 stjerner
2 stjerner
1 stjerne

Har besvaret 100 % af deres negative anmeldelser

Svarer typisk inden for 1 uge

Sådan bruger denne virksomhed Trustpilot

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Bedømt til 5 ud af 5 stjerner

I bought this (Frontier X Plus) to… monitor my PVC burden

I bought this (Frontier X Plus) to monitor PVCs that I was having and try to determin the burden from them over period of rest and workout activity, walking etc. My physician ordered a 2 week patch monitor which did not come even after two weeks. I ordered this and had it up and running in a week and it works as advertised. They only classify PVCs as Inconclusive. Only AFIB is positively identified as well as Bradycardia and Tachycardia. For my use - Inconclusive is basically telling my I have irregular rhythm and its PVCs in my case. Works well, occasionaly with dry skin - it says unreadable - but a slight moving and resetting of the strap brings it back online. It works for 8-10 hour sleep monitoring or just an hour of interval training or yoga. All the things I cannot do with just my Apple watch or Whoop.

12. april 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for sharing your experience!

We’re glad the device has been helpful for tracking your rhythm during both workouts and sleep. Really appreciate you taking the time to write this 😊

Bedømt til 5 ud af 5 stjerner

Best Heart Tracking Device Out There

I’ve been using the Frontier X2 Smart Heart Rate Monitor chest strap for about six months, and it’s become a key part of my daily routine. I use it across a wide range of activities—Peloton Bike+, running, stretching, meditation, HIIT, yoga, indoor and outdoor cycling, and strength training. I also deal with heart rhythm issues, including arrhythmias, PACs, PVCs, possible AFib, and occasional pauses, so having consistent, reliable monitoring is important to me.

What stands out most is its ability to track heart activity during sleep. It captures every beat and provides detailed insights like heart strain, HRV, and sleep stages (awake, REM, light, and deep). The strap is very comfortable, even overnight, and the battery lasts several days with heavy use. The data has been incredibly useful in helping me evaluate whether my lifestyle changes are actually making a difference.

One of the biggest takeaways for me has been seeing how well my treatment is working. The device has helped confirm that my medication is effective—and more importantly, that my CPAP therapy has made a huge impact. I was diagnosed with obstructive sleep apnea (OSA), which likely contributed to my heart rhythm issues. Despite being fit and having what my doctors call an “athlete’s heart,” this had gone undetected for years. Since starting CPAP, my arrhythmia burden during sleep has dropped from around 70% to about 7%, and it continues to improve.

I also use a Kardia 6L, which is great, but it doesn’t provide the same continuous tracking or depth of data as the Frontier X2.

As a web applications developer, I really appreciate the software experience. Both the mobile app and the web dashboard are clean, intuitive, and recently updated. The interface makes it easy to understand the data, and I especially like how it clearly flags arrhythmias so you don’t have to manually scan through ECG recordings.

Yes, it’s a bit pricey—but in my opinion, it’s absolutely worth it. I was so impressed that I even bought one for a friend who’s a nurse and nationally certified ECG technician at Kaiser. I also pay for the yearly subscription, and I find it well worth the cost.

Overall, I’m genuinely glad a device like this exists. It’s given me real insight into my heart health and helped me track meaningful progress. If you’re considering it, I’d definitely recommend it—you’ll likely love it as much as I do.

1. december 2025
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you so much for taking the time to share such a detailed experience.

We’re truly glad the device has been helpful in your daily routine and in tracking the progress you’ve been making — stories like this mean a lot to our team.

We really appreciate your support and recommendation 😊

Bedømt til 5 ud af 5 stjerner

Important high quality device to monitor my workouts

This is an important device to monitor my progress. I use it almost every day to track individual workouts. In addition I have worn it overnight to track my heart rate during sleep (once a month). This is a high fidelity measurement device coupled with software to track trends both individual workouts and week/month trends.

8. april 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for sharing this!

We’re really glad the device has become a part of your daily training and helps you track both workouts and long-term trends. Appreciate your support 😊

Bedømt til 5 ud af 5 stjerner

Best Heart Rate Monitor on the market!

Really good product! Up there with the best heart rate monitor on the market! Solid data with ECG recording capabilities! Customer service is top notch. The APP is user friendly!
Definitely worth trying out for yourself and highly recommended!

7. april 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you so much for the wonderful feedback!

We’re thrilled to hear you’re enjoying the device, the app, and the support experience. Really appreciate the recommendation 😊

Bedømt til 5 ud af 5 stjerner

Almost two years use and still all good

I have had my device, the Frontier X 2, for almost two years now. Over that time, I had an issue with the device rectified quickly following some email communication with their support team, who helped me reset the device. I have also had a couple of live Zoom/Teams calls with them to discuss the results I was getting with the device, which I was unclear about. They have always been quick to answer my support questions, and they even accommodated times for the live calls outside of their normal hours, which was great. I use the device at least 4 days of the week when training, and I am overall very happy with my purchase.

25. juni 2025
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for sharing your experience and for being with us for so long!

We’re really glad we could help you along the way and make time for those calls when you needed them. It’s great to hear the device has been a regular part of your training. We truly appreciate your support 😊

Bedømt til 3 ud af 5 stjerner

Bad product experience great customer support

Product did not work for me. Kept getting noise in my data regardless of what I did spending time with Customer support. However the customer support team was extremely responsive, polite and accommodating. This would have been zero stars without their support and help. Resulted in full refund of my cost. Now receiving calls from customer support to change or remove my review. So dont trust the reviews you do see. There are other products out there try one of them.

24. marts 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for sharing your experience. We’re really sorry the device didn’t work out for you, but we’re glad our team could support you and make the refund process smooth. We truly appreciate your kind words about our support.

Bedømt til 5 ud af 5 stjerner

EKG für jedermann mit gutem Support

Nach mehreren Episoden an Vorhofflimmern habe ich mir den Frontier X2 zugelegt. Ich freue mich über die Beruhigung mögliche Episoden während Trainingseinheiten oder im Schlaf auch diagnostisch erfassen zu können und den behandelnden Ärzten ein 1-Kanal EKG zur Verfügung stellen zu können.
Den Support habe ich jetzt zweimal in Anspruch genommen - beide Male schnelle und lösungorientierte Unterstützung bekommen. Klare Empfehlung.

23. marts 2026
Uopfordret anmeldelse
Fourth Frontier-logo

Besvarelse fra Fourth Frontier

Thank you so much for sharing your experience!

We’re really glad the device is giving you peace of mind and helping you track episodes when it matters most. Great to hear our support team could help you quickly as well.

We truly appreciate the recommendation 😊

Bedømt til 5 ud af 5 stjerner

Very good customer support

Very friendly, kind and customer focused support. My technical issue was picked up and solved very quickly.

21. marts 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you so much for your kind words!

Really glad we could resolve your issue quickly — our team always aims to be as helpful and responsive as possible.

We’re here anytime you need us 😊

Bedømt til 5 ud af 5 stjerner

Excellent product

Excellent product, I had Afib and it helped me to understand which activities brought it on, sleeping and exercising in my case. This also helped me make the decision between medication and ablation. Customer service is also top notch. Quick response times very knowledgeable.

12. marts 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you so much for sharing this — it really means a lot to us.

We’re glad the device could help you understand your triggers better and support such an important decision.

Also great to hear your kind words about our support team 😊 Always here if you need anything!

Bedømt til 5 ud af 5 stjerner

I’ve been using the FrontierX HR monitor for arrhythmia and metabolic training zones definition

I’ve been using the FrontierX HR monitor for nearly 6 months. Firstly to track a mild exercise induced atrial arrhythmia which I then shared with the cardiologist who was then able to diagnose together with stress ECG. Secondly to better define my training zones via breathing rate / metabolic analysis for VT1 and VT2 for triathlon. I used the online fourth frontier analysis tool together with my own ramp tests and FTP tests to nail my “easy”, “moderate” and “hard” intensity zones with power, heart rate and breathing. Very powerful- to the extent that pro-cycling teams are doing this now. Easy is now easy and hard is hard. No straying into grey moderate workouts. This helps to recover faster and maintain training load. I’ve had a few issues - mainly software and reboots - but customer service is really fast and very high quality in terms of troubleshooting and fixes. Given the accuracy and precision of the monitor I’m amazed at how small, durable (I’m a heavy sweater) and robust it is. Overall very good!

17. marts 2026
Uopfordret anmeldelse
Fourth Frontier-logo

Besvarelse fra Fourth Frontier

Thank you for the detailed review and for sharing your experience.

We’re really glad to hear the device has helped both with capturing ECG data for your cardiologist and refining your training zones. It’s also great to know our support team was able to assist you promptly when needed.

We truly appreciate your support!

Bedømt til 2 ud af 5 stjerner

Great idea gone awry.

I bought the X plus with the goal of full-time AF monitoring. I run frequently and wanted to know if arrhythmias were related to exercise as well. I have been disappointed in both, but mostly for running. Almost every run, the X plus wil start out recording, then show “unrecordable” or will be unable to interpret the rhythm, “indeterminate”. I have abandoned the X plus and now wear my Apple Watch 24/7 and it gives me Afib burden. This is more useful than the X plus. X plus is a great idea gone awry: great hopes but poor delivery. Support suggestions were not of much use. My Apple Watch has been much more reliable, even though Apple Watch does not monitor full-time and could miss a brief AF episode.

25. december 2025
Uopfordret anmeldelse
Fourth Frontier-logo

Besvarelse fra Fourth Frontier

Thank you for sharing your feedback, and we are sorry to hear that your experience during runs has not met your expectations.

One of our customer support team members will reach out to you shortly to review your recordings and assist you further. We truly appreciate you taking the time to share your experience.

Bedømt til 4 ud af 5 stjerner

This device probably saved my life

This device probably saved my life. The doctors were dismissing my concerns until I gave them hard evidence. The support group is really helpful. I gave them 4 stars for two reasons. One, the android app is buggy. Sometimes it connects to the chest strap connects right away, sometimes it doesn't. Sometimes the app is responsive and sometimes it freezes up. The other reason for losing a star is the marketing. I was under the impression that more features were available without a premium subscription. I am tired of tech companies always telling you all the great things they do only for you to find out it costs more money.

6. marts 2026
Uopfordret anmeldelse
Fourth Frontier-logo

Besvarelse fra Fourth Frontier

Thank you for sharing your experience. We’re really glad to hear that the device helped you capture data that supported discussions with your doctors, and that you’ve found the support team helpful.

We also appreciate your feedback regarding the Android app and the subscription messaging. Your feedback has been forwarded to our team as we continue working on improving the app experience.

If you ever need assistance, please feel free to reach out to our support team. We’re always happy to help.

Bedømt til 5 ud af 5 stjerner

Amazing product

Amazing product. With a ECG during workouts gives a lot of insights to the heart.

16. februar 2026
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Besvarelse fra Fourth Frontier

Thank you for your wonderful feedback! We’re thrilled to hear that the ECG feature during workouts is providing meaningful insights into your heart performance. Helping you better understand your body and train with confidence is exactly what we aim for. We truly appreciate you taking the time to share your experience!

Bedømt til 5 ud af 5 stjerner

Very helpful device, great view of dsta

I was not seeing data i expected. The tech team quickly identified the issue and provided a recommendation.

17. februar 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for your feedback. We’re glad our tech team was able to quickly identify the issue and guide you with the right recommendation. If you need any further assistance, we’re always here to help.

Bedømt til 5 ud af 5 stjerner

More than an HRM

I've been using my X2 for several years, and have encountered a few challenges (mostly software related). Every time, the service team is on it. They fully research and respond to every request - that's incredible! It's more than an HRM, and it allows me to continue pushing my physical limits while keeping an eye on my artificial heart valve. Thank you.

12. februar 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you so much for your kind words and for being with us over the years. It means a lot to know the X2 is helping you train confidently while keeping an eye on your heart health. We’re always here to support you whenever you need us.

Bedømt til 4 ud af 5 stjerner

Two steps backwards in interface.

Fundamentally it should be and has been a great device, genuinely one of the best training tools I have used. I have owned both Gen 1 and Gen 2 and loved the previous interface. Had them for some time.

However, the recent website changes have significantly reduced its usability.

• Reviewing individual recordings is now much harder than it used to be
• The new interface feels like a major step backward
• It is far less intuitive to dig into specific results
• Previously I could use a drop in heart rate or an algorithm flagged event as a cue to scan the corresponding ECG above on the same screen dragging my mouse across until the lined up
• It was slightly clunky, but once you understood the workflow it worked well
• Now premium locked features sit between the heart rate graph and the ECG view
• You can no longer easily view both on screen together for interpretation

That was the core value of the platform. Without seamless alignment between the heart rate graph and the ECG trace, the tool becomes dramatically less useful.

In its current state, I cannot recommend it. The hardware remains excellent, but the software experience has undermined it. 2/2 stars for hardware, but in terms of outputs, its rendered very near useless in its current form, as its bit like pin the tail on the donkey to find the relevant 20 second strip. 1/3 for that for a total of 3, which is generous given the silly prices for this kit. Currently NOT good value at all. Best avoided unless this gets fixed.

Edit 9/2. The interface appears to have improved.And I can now drag the HR graph to right below the ECG, as it used to be. This is much better. The frustrating "drag and zoom" function appears to have improved too. IT was allowing you to zoom on both x and y axis meaning it was very easy to lost perspective of the graph. This too has been fixed. Score adjusted up 1.

5. februar 2026
Uopfordret anmeldelse
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Besvarelse fra Fourth Frontier

Thank you for the honest and detailed feedback. We really appreciate you sharing this, especially given your long experience with both generations of the device. We’re sorry the recent interface changes have impacted usability — this isn’t the experience we want for our users. The team is actively working on improvements, and your inputs have been shared internally. One of our team members will also reach out to you directly to understand this better and help further. Thanks again for taking the time to help us improve.

Bedømt til 5 ud af 5 stjerner

Amazing product which i always wanted…

Amazing product which i always wanted to buy. And got the delivery within 4 days after placing the order.

However the device wasn't recodring any activity to which I mailed the support system and they resilved the issues withing few hours.

Great experience and happy me 😊

3. februar 2026
Uopfordret anmeldelse
Fourth Frontier-logo

Besvarelse fra Fourth Frontier

Thank you so much for sharing your experience with us. We’re really glad to hear that the delivery was quick and that our support team was able to resolve the recording issue within a few hours. It’s great to know the device is now working as expected and that you’re happy with your experience. If you ever need any assistance or have questions in the future, we’re always here to help. Wishing you a great experience ahead with the device!

Dette er Trustpilot

Alle kan skrive en anmeldelse på Trustpilot. En anmeldelse er ejet af personen, som har skrevet den, og vedkommende kan derfor redigere eller slette den til enhver tid. En brugers anmeldelser bliver vist, så længe vedkommendes konto er aktiv.

Virksomheder kan bede deres kunder skrive en anmeldelse ved hjælp af automatiske invitationer. Denne type anmeldelser handler om reelle oplevelser og markeres "Verificeret".

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Vi bruger en kombination af dedikerede medarbejdere og avanceret teknologi til at beskytte vores platform. Find ud af, hvordan vi bekæmper falske anmeldelser.

Læs om anmeldelsesprocessen på Trustpilot.

Hér finder du 8 tips til at skrive anmeldelser.

Verificering kan være med til at sikre, at det er rigtige mennesker, der skriver de anmeldelser, du læser på Trustpilot.

Det kan påvirke TrustScoren, når man tilbyder incitamenter i bytte for anmeldelser, eller når man kun spørger bestemte kunder, og det er imod vores retningslinjer.

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