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Frontier X Download

Download Frontier X APK

Frontier X

The official app & game

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iPhone app Frontier X download it using ApkOnline.

This application allows you to connect with and use Frontier X - a revolutionary new wearable device that monitors your lungs and heart and gives you real-time alerts as you exercise. Once you download this application on your iPhone, you can also use the accompanying application for the Apple Watch, which will allow you to view your real-time data if you exercise with the Frontier X and the Apple Watch. In order to use this application, you need to have the Frontier X device, available at

The Frontier X is a chest-worn device that has the following features:

Suitable for Running, cycling, swimming and any other endurance exercises

Effort estimation based on Breathing Rate

Real-time vibration alerts when you cross your Effort and Strain thresholds

Accurate internal training load computation spanning all exercises

Actionable training insights

Easy to use. Strap on and start. Sync later

View quick workout summary on device screen

Highly accurate Heart Rate data

Apps available for iOS and Apple watches

IP67 Waterproof up to 1.5 M

Battery: 14+ days of typical use, up to 24-hrs continuous use,

Get it from Apple Store

Download Frontier X from


Developer: Fourthfrontier

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