# Welbeck FX

> Welbeck FX (iPhone/iPad app by Fourthfrontier.)

- Source: https://appshunter.io/ios/app/welbeck-fx/id1638701179 (this page in markdown: same URL + `.md`)
- Developer: [Fourthfrontier](https://appshunter.io/developer/1331846764)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 12+
- Requires: iOS 15.5 · 81 MB
- Languages: American English
- Released: 2023-02-23
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/welbeck-fx/id1638701179/reviews.md

## What is Welbeck FX?

This application allows you to connect with and use Frontier X - a revolutionary new wearable device that monitors your lungs and heart. Once you download this application on your iPhone, this will allow you to view your real-time data if you exercise with the Frontier X device.  In order to use this application, you need to have the Frontier X device, available at fourthfrontier.com. 

Frontier X integrates with HealthKit to export your Frontier X activities into the Health app and to read heart rate and biometric data.

The Frontier X is a chest-worn device that has the following features:
Suitable for recording during Rest, Sleep and Activity.
Real-time vibration alerts when you cross your Heart Rate thresholds
Easy to use. Strap on and start. Sync later
View quick activity summary on device screen  
Highly accurate Heart Rate data
Apps available for iOS.
IP67 Waterproof up to 1.5 M
Battery: 14+ days of typical use, up to 24-hrs continuous use


## Version history (last 5 releases)

### 2.1.0 — 2026-01-22

• Bug fixes and improvements.

### 2.0.0 — 2025-07-07

• Bug fixes and improvements.

### 1.5 — 2025-03-14

• Bug fixes and improvements.

### 1.4 — 2024-08-23

• Bug fixes and improvements.

### 1.3 — 2023-09-11

• Other Bug fixes and improvements.

## More apps by Fourthfrontier

- [Frontier X](https://appshunter.io/ios/app/frontier-x/id1483444499)
- [NM HRV](https://appshunter.io/ios/app/nm-hrv/id6450173490)
- [Frontier X Plus](https://appshunter.io/ios/app/frontier-x-plus/id6450455513)

All apps by Fourthfrontier: https://appshunter.io/developer/1331846764

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*