Frontier X

What's New

Bug fixes and improvements.

About this app

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 .

How to Download Frontier X APK

1. Enter the package name com.fourthfrontier.biostrip on the APK Downloader homepage.
2. Select your device architecture (ARM64 recommended for modern devices).
3. Click Download to get the merged APK file.
4. Transfer and install the APK on your Android device.
5. Keep Updated: Visit APK Downloader regularly to search for and download the latest secure versions of your favorite apps.