--- title: "Frontier X - Reviews, Revenue and Downloads in United States | Apple App Store" description: "With your Frontier X/X2, track your activity including exercise, rest or sleep to get detailed insights on heart health and exercise performance. This companion app allows you to connect with Frontier" --- # Frontier X — United States ![Frontier X App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/62/61/19/626119bf-21b6-98c4-41d7-353a2e7991de/AppIcon-0-0-1x_U007emarketing-0-11-0-sRGB-85-220.png/434x0w.png) **Developer:** [Fourth Frontier Technologies Private](https://apptail.io/developer/fourth-frontier-technologies-private-LFHc) **Category:** Health Fitness **Rating:** 4.6/5 (284 ratings) **Price:** Free **Bundle ID:** com.fourthfrontier.frontierX **Store:** Apple App Store **Country:** United States **Version:** 22.5.1 (released 2026-10-27) **Original Release:** 2019-10-28 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1483444499) **AppTail Page:** [https://apptail.io/app/frontier-x-MGT/united-states](https://apptail.io/app/frontier-x-MGT/united-states) ## Frontier X Description With your Frontier X/X2, track your activity including exercise, rest or sleep to get detailed insights on heart health and exercise performance. This companion app allows you to connect with Frontier X2 - a revolutionary chest strap wearable smart heart monitor and view your recorded data. Trusted by world-class athletes across the globe, the Frontier X2 is a chest-worn Smart Heart Monitor that provides in-depth real-time feedback on your heart health. It can monitor your: - Heart Health - Heart Rate - Heart Rate Variability (HRV) - Breathing Rate - Strain - Rhythms - Training Load - Calories - Stress, and a lot more. • Accurately record your activity like exercise, running, cycling, resting, sleeping, meditation, etc for up to 24hrs with comprehensive heart health insights. • Spot changes in your heart health with Rhythm and Strain. • Train in the right zone without distractions with real-time, personalized, and discreet vibration alerts. • Add health event tags to help you understand how lifestyle choices and behavior affect your health. • Seamlessly integrate with Bluetooth-enabled wearables and third-party devices such as GPS sports watches, bike computers, and more. • AI-enabled algorithms - Receive post-activity training insights, recommendations, and weekly goals. • Frontier X integrates with HealthKit to export your Frontier X activities into the Health app and to read heart rate and biometric data. • IP67 Waterproof up to 1.5 M • Battery: 14+ days of typical use Now get deeper insights and data with Frontier Premium Subscription*: Metabolic Profile Analytics: Track training intensity and the impact of lifestyle changes on metabolic health with key metrics like VO2 Max, VO2 Zones, Oxygen Uptake, and Ventilatory Thresholds (VTs). VO2 Max: Get the most accurate real-time Vo2 Max data. While other wearables estimate using motion and heart rate, our advanced algorithms provides precise Vo2 Max readings outside of a lab, tracking cardiovascular efficiency and endurance potential. Readiness Score: Determine if your body is ready for peak performance or needs recovery. Advanced algorithms use heart rate, heart rate variability (HRV) to guide your daily activities and training. Sleep Stage Analysis: Get a comprehensive understanding of your sleep quality (Webapp). With Frontier's Premium subscription and Metabolic Profile Analysis, tracking your VO₂ max becomes simpler and more precise. *A Paid Frontier Premium subscription is required to access the full feature set . The Premium feature subscription comes with a complimentary 7 days free trial, and continue at a minimal monthly cost starting from USD 14.99, or opt for an annual plan for substantial savings. Please note that prices may fluctuate based on your geographical location, currency, and current exchange rates The Terms of use are available in the app and our website: About Fourth Frontier Fourth Frontier is an innovative health-tech company focused on revolutionizing heart health monitoring with its cutting-edge wearable technology. We are the World’s First Smart Heart Monitor. With over 5 billion heartbeats recorded from 120,000+ users across 50+ countries, we are empowering users to understand and manage their heart health in real-time. These features make the Frontier App a comprehensive tool for heart health management and fitness improvement. Download the app today and access the most accurate heart health data available. Apps available for iPhone and Apple Watch. ## Frontier X Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/42/79/39/42793935-547b-87e1-afe0-e6713456526b/Homepage.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/51/96/71/5196715f-2f7e-3327-d20c-bd2f938e0458/Start_Activity.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9a/3f/d0/9a3fd05e-a0b8-ab4a-8696-ab79c268914e/6.5_iOS_Edit_Alerts.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2a/a6/15/2aa61518-ef65-182a-835b-5b68c1f48fba/6.5_iOS_Live_Activity.png/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/97/ba/96/97ba9623-8b1c-d87f-cb9b-e4553bf00e06/6.5_iOS_Metabolic_Profile.png/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/42/b2/d5/42b2d569-3133-4a11-7e35-57616a67f03d/6.5_iOS_Readiness_Score.png/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d4/85/48/d485480b-25b0-3f5a-acf2-110b0031f83c/6.5_iOS_Activity_Summary_1.png/1242x2688.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d7/74/92/d77492fb-6deb-a2ba-aaf4-e3f7a99b053c/6.5_iOS_Activity_Summary_Metrics.png/1242x2688.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ab/8d/d3/ab8dd3e2-76b4-e695-6ba8-44f2dcb9cc35/6.5_iOS_Heart_Rate_Graph.png/2688x1242.png) ## Frontier X Rating Breakdown in United States - 5 stars: 226 (80%) - 4 stars: 32 (11%) - 3 stars: 3 (1%) - 2 stars: 5 (2%) - 1 stars: 18 (6%) ## Frontier X Reviews in United States ### ***** "Great HR Monitor" Love having the full EKG monitoring during workouts and for just monitoring HR anytime you want. Great stable product. -- dblski, 2025-09-07 ### *---- "ECG doesn’t work" ECG stopped working , it sync data but it shows no data available -- Tommmhhh, 2025-08-19 ### ***** "Fantastic" Fascinating concept with excellent execution. I’m a doc who is used to reading EKG. Einthoven would be proud! Great product! -- bshipleyMD, 2025-07-24 ### ***** "Incredibly Powerful" My main passion that I study a lot is cardiology, however I am not a doctor. I have had issues with palpitations in the past and trying to be seen by a condescending cardiologist where I am is insanely difficult. My Frontier X2 has unlocked a door that is mind blowing to me. Being able to monitor my heart on my OWN has been life changing. Of course (thanks to this app) pulling up a live ECG is very impressive to everyone I’ve shown, it is very accurate and useful. I initiated events to record entire workdays and entire nights and the data quality is stellar upon review. I love how quickly it can process 10 hours of data and prepare itself for another session, it’s very efficient. I love the metrics that are calculated for you as well! It’s been very liberating and helped me to reduce my anxiety seeing my heart performing well through all I put it through despite the occasional PVC- which is not concerning to me at this point. This app has allowed me to clearly link it with anxiety. I like being able to mark when I’m stressed or doing different things. The app also works well and hasn’t given me any major issues. The only minor one is needing to be closed and re opened after ending and finishing processing a long activity. If not, the live ECG will not load. This isn’t a complaint though, it’s easy enough to deal with. -- Seymour Fourier, 2025-05-24 ### ***** "Best Heart Rate Monitor" Had my doubts on the Frontier X but after a week of wearing it and using the device best decision ever made and worth the money I highly recommended to anyone who wants to up their endurance and need to see how far they can push there body. -- TAAPD#71, 2025-05-11 ### ***** "Frontier X after 1 year" Very appropriate of the effort taken into designing this chest strap. At male age 71 very cognizant of my mortality I’m really happy with the metrics the app & strap provides. Thank you to all Frontier X employees!! -- Ernesto Senior, 2025-05-11 ### ****- "Product is working adequately" I have a few issues using the X2 with a Garmin 1030 Plus, so I’m running it directly with the Frontier App and things are working much better. I’m using the Garmin strap with the 1030 plus. The real issues when using the Frontier with the Garmin is that Breathing counts aren’t transferred even thought he Frontier X2 can figure that out since it passes it to the Frontier App on the Iphone. -- Mac Old Man, 2025-04-23 ### ***** "The good stuff" 👍👍👍 -- regclerk2000, 2025-03-30 ### ***** "Fantastic device!" I use Fourth Frontier to monitor my AFIB and my exercise. It is accurate, easy to use, and gives tons of useful information. The battery lasts at least 24 hours and charges fast. The App is easy to use and tracks several important metrics. My cardiologist has found the ECG to be very helpful. I now know when I am working out too hard. I love this device and app! -- BradKCW, 2025-01-23 ### ****- "10k better" Very helpful -- AngelMTZ74, 2024-12-20 [View all Frontier X reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Frontier X In-App Purchases | Item | Price | |------|-------| | Monthly | $14.99 | | Yearly | $119.99 | ## Frontier X Discovered Keywords - frontier x ## Apps Similar to Frontier X - [CORE Thermal Sensor](https://apptail.io/app/core-thermal-sensor-dQv/united-states) - [Nix Solo](https://apptail.io/app/nix-solo-wgD/united-states) - [HRV4Training](https://apptail.io/app/hrv4training-VoQ/united-states) - [hDrop App](https://apptail.io/app/hdrop-app-MJS/united-states) - [Airofit](https://apptail.io/app/airofit-NGT/united-states) - [Livenpace](https://apptail.io/app/livenpace-NOhc/united-states) - [ECG Logger for Polar H10](https://apptail.io/app/ecg-logger-for-polar-h10-MGcd/united-states) - [ActiveLook Sport Eyewear](https://apptail.io/app/activelook-sport-eyewear-Dkye/united-states) - [Calibre Biometrics](https://apptail.io/app/calibre-biometrics-aLKv/united-states) - [CONNEQT Health](https://apptail.io/app/conneqt-health-ksfw/united-states) ## Frontier X Available In - [United States](https://apptail.io/app/frontier-x-MGT/united-states) - [United Kingdom](https://apptail.io/app/frontier-x-MGT/united-kingdom) - [India](https://apptail.io/app/frontier-x-MGT/india) - [Canada](https://apptail.io/app/frontier-x-MGT/canada) - [Belgium](https://apptail.io/app/frontier-x-MGT/belgium) - [Germany](https://apptail.io/app/frontier-x-MGT/germany) - [Italy](https://apptail.io/app/frontier-x-MGT/italy) - [Netherlands](https://apptail.io/app/frontier-x-MGT/netherlands) - [Colombia](https://apptail.io/app/frontier-x-MGT/colombia) - [Sweden](https://apptail.io/app/frontier-x-MGT/sweden) - [Australia](https://apptail.io/app/frontier-x-MGT/australia) - [Austria](https://apptail.io/app/frontier-x-MGT/austria) - [Spain](https://apptail.io/app/frontier-x-MGT/spain) - [Switzerland](https://apptail.io/app/frontier-x-MGT/switzerland) - [France](https://apptail.io/app/frontier-x-MGT/france) - [Mexico](https://apptail.io/app/frontier-x-MGT/mexico) - [Cyprus](https://apptail.io/app/frontier-x-MGT/cyprus) - [Hungary](https://apptail.io/app/frontier-x-MGT/hungary) - [Ireland](https://apptail.io/app/frontier-x-MGT/ireland) - [United Arab Emirates](https://apptail.io/app/frontier-x-MGT/united-arab-emirates) - [Norway](https://apptail.io/app/frontier-x-MGT/norway) - [Peru](https://apptail.io/app/frontier-x-MGT/peru) - [Portugal](https://apptail.io/app/frontier-x-MGT/portugal) - [Taiwan](https://apptail.io/app/frontier-x-MGT/taiwan) - [South Africa](https://apptail.io/app/frontier-x-MGT/south-africa) - [Hong Kong SAR China](https://apptail.io/app/frontier-x-MGT/hong-kong) - [Singapore](https://apptail.io/app/frontier-x-MGT/singapore) - [Indonesia](https://apptail.io/app/frontier-x-MGT/indonesia) - [Thailand](https://apptail.io/app/frontier-x-MGT/thailand) - [Israel](https://apptail.io/app/frontier-x-MGT/israel) - [China](https://apptail.io/app/frontier-x-MGT/china) - [Chile](https://apptail.io/app/frontier-x-MGT/chile) - [Japan](https://apptail.io/app/frontier-x-MGT/japan) - [South Korea](https://apptail.io/app/frontier-x-MGT/south-korea) - [Kuwait](https://apptail.io/app/frontier-x-MGT/kuwait) - [Lebanon](https://apptail.io/app/frontier-x-MGT/lebanon) - [Türkiye](https://apptail.io/app/frontier-x-MGT/turkey) - [Malaysia](https://apptail.io/app/frontier-x-MGT/malaysia) - [Nigeria](https://apptail.io/app/frontier-x-MGT/nigeria) - [Belarus](https://apptail.io/app/frontier-x-MGT/belarus) - [Vietnam](https://apptail.io/app/frontier-x-MGT/vietnam) - [New Zealand](https://apptail.io/app/frontier-x-MGT/new-zealand) - [Ukraine](https://apptail.io/app/frontier-x-MGT/ukraine) - [Philippines](https://apptail.io/app/frontier-x-MGT/philippines) - [Pakistan](https://apptail.io/app/frontier-x-MGT/pakistan) - [Poland](https://apptail.io/app/frontier-x-MGT/poland) - [Azerbaijan](https://apptail.io/app/frontier-x-MGT/azerbaijan) - [Romania](https://apptail.io/app/frontier-x-MGT/romania) - [Russia](https://apptail.io/app/frontier-x-MGT/russia) - [Saudi Arabia](https://apptail.io/app/frontier-x-MGT/saudi-arabia) - [Brazil](https://apptail.io/app/frontier-x-MGT/brazil) - [Algeria](https://apptail.io/app/frontier-x-MGT/algeria) - [Ecuador](https://apptail.io/app/frontier-x-MGT/ecuador) - [Egypt](https://apptail.io/app/frontier-x-MGT/egypt) - [Dominican Republic](https://apptail.io/app/frontier-x-MGT/dominican-republic) - [Finland](https://apptail.io/app/frontier-x-MGT/finland) - [Denmark](https://apptail.io/app/frontier-x-MGT/denmark) - [Czechia](https://apptail.io/app/frontier-x-MGT/czechia) - [Greece](https://apptail.io/app/frontier-x-MGT/greece) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*