Companion App of Frontier X for runners, cyclists and other endurance athletes
About Frontier X
Frontier X is a health & fitness app developed by Fourth Frontier Technologies Private Limited.
How many times has Frontier X been downloaded?
Frontier X has been downloaded 11 thousand times. In the last 30 days, the app was downloaded 240 times.
What is the rating of Frontier X?
Frontier X is rated 4.30 out of 5 stars, based on 340 ratings.
Is Frontier X free?
Frontier X is free to download. The APK download size is 38.32 MB. The latest version available is 12.0.1.7. The last update was on May 29, 2026.
What are the requirements for Frontier X?
Frontier X requires Android 8.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2019.
Description
With your Frontier X/X2, track your ECG during any 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 24/7 Continuous ECG Heart Rate Heart Rate Variability (HRV) Breathing Rate Strain Rhythms Training Load Calories Stress, and a lot more.
● Accurately record continuous ECG for up to 24hrs during any activity like exercise, running, cycling, resting, sleeping, meditation, etc for 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. ● Generate PDF reports of your ECG and securely share it, along with other health metrics, with anyone worldwide. ● 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.
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 VOo2 Max data. While other wearables estimate using motion and heart rate, our continuous ECG provides precise VOo2 Max readings outside of a lab, tracking cardiovascular efficiency and endurance potential. Unlike wrist-based devices, our 24/7 ECG-based system consistently captures your heart's electrical signals, offering reliable data.
Readiness Score: Determine if your body is ready for peak performance or needs recovery. Advanced algorithms use heart rate, heart rate variability (HRV), and ECG data to guide your daily activities and training.
Sleep Stage Analysis: Get a comprehensive understanding of your sleep quality. Our system uses continuous ECG to track heart patterns and sleep stages.
With Frontier's Premium subscription and Metabolic Profile Analysis, tracking your VO₂ max becomes simpler and more precise.
About Fourth Frontier Fourth Frontier is an innovative health-tech company focused on revolutionizing heart health monitoring with its cutting-edge wearable ECG 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 iOS, Android, and Apple Watch.
*A Paid Frontier Premium subscription is required to access the full feature set .
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The device has been invaluable in getting back into an exercise regime and having peace of mind after being diagnosed with a cardiac issue. This is a really great product. I would love to see some extra functions and alerts, and it would be great to be able to check on the current ECG that is being recorded during a workout. It would also be great to have a shortcut button in the app for an instant ECG.
★★★★★Sergey Kolarov· Aug 20, 2025
The Frontier X2 is an excellent device – accurate, reliable, and packed with advanced features for heart and performance monitoring. It gives me confidence during training and long-distance runs. My only suggestion: please create a dedicated app for the Samsung Galaxy Watch Ultra. Having live data and coaching directly on the watch would make the Frontier X2 truly unbeatable. Highly recommended!
★★★★★Petar R· Aug 30, 2024
Good ECG monitor, been great to monitor and plan exercise after having heart op. Very happy with it
★★★★☆Ricardo Nj· Jan 13, 2024
Excellent HR monitor, app missing health connect. For Android users, health connect is what the best health apps are connecting with. Every major activity tracker app and many other health apps support syncing with health connect. Please add this feature, so I can get the heart rate data imported to where I want.
★☆☆☆☆Greg G· Apr 5, 2026
Unfortunately customer service appears to be nonexistent at this point. I've sent 3 emails over the past couple of months about an extremely frustrating sync issue and have received no response. Whenever finishing a workout, the sync times out getting the workout summary, and it takes at least 10 minutes to reset everything to get sync working. I've purchased 3 of their straps and first reported this issue a few years ago. At this point many hours of my life have been wasted dealing with this!
★★☆☆☆Courtney N· May 9, 2023
The app has been bugging me lately. It keeps kicking me out and saying my user doesn't exist. The first time it did this, it caused my whole app to mess up. It doesn't let the actual ecg of your activity pop up till days later now, and you have to keep the device itself consistently on and running just to eventually get the app to register previous activities? Which is dumb. When it's processing to sync, it should automatically be syncing up for the ecg, not waiting till a week later.
★☆☆☆☆B12ANR· Sep 20, 2024
Sandeep? Unable to connect the app until Sandeep approves it? Also, unable to make selections at key stages such as 'goals' and 'location services' where it either does not accept the selection or there is no option to select. Not a great start to owning a FF2 monitor!
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