Frontier X

Fourth Frontier Technologies Private Limited

In-app purchases

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 .

Ratings and reviews

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!

ONLY WORKS WITH THERE MONITOR, This app is fantastic... The only thing wrong with it is that It doesn't show your calories. It's more of an app for your ECG and heart information. I've talked to the company they said they're going to put calories in it eventually, describing if you're in a anaerobic, aerobic, cardio state depending on your age and the information you put in the app. SAD but it's just the way it works It only updates every 10 seconds! They say it's necessary for the ECG function.

The device has been invaluable in getting back into an exercise regime and having peace of mind after been 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 been recorded during a workout. It would also be great to have a shortcut button in the app for an instant ECG.

What’s new

Android 15 compatibility changes