# TrueZone — Track your endurance

> Track your endurance (iPhone/iPad app by Driftline ehf..)

- Source: https://appshunter.io/ios/app/truezone/id1574232639 (this page in markdown: same URL + `.md`)
- Developer: [Driftline ehf.](https://appshunter.io/developer/1574232641)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 14.0 · 72 MB
- Languages: English
- Released: 2023-10-16
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/truezone/id1574232639/reviews.md

## What is TrueZone?

The future of fitness testing. TrueZone offers quick-and-easy, gold-standard fitness testing for coaches or individuals, requiring only a heart rate monitor.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Heart rate analysis | $5.99 | one-time |
| 10 fitness tests | $49.99 | one-time |



## Version history (last 5 releases)

### 2.1.7 — 2025-03-06

Updated race time predictions, improved intro and a few UI tweaks.

### 2.1.6 — 2025-02-15

Updated the max speed calculation to be more accurate.

### 2.1.5 — 2025-02-13

The interface has been updated to cater to coaches and health professionals. Added the ability to buy fitness report credits via IAP.

### 2.1.3 — 2024-04-21

Bug fixes & small improvements.

### 2.0.10 — 2024-03-27

Bug Fixes.
Stability Enhancements: We've improved the stability of the app to ensure it runs smoothly without any unexpected crashes.

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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 2026-05-16.*