# TrueZone vs BioSteer

The clearest difference is in-app purchases: BioSteer at none against TrueZone's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TrueZone sells 2 one-off in-app purchases. BioSteer asks for nothing beyond the download.

TrueZone ships an update every 3 weeks, BioSteer monthly. The most recent releases landed on May 16, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | TrueZone | BioSteer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 72 MB | 77 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Driftline ehf.](https://appshunter.io/developer/1574232641) | [CENTARIX BIOTECH LTD](https://appshunter.io/developer/1667218539) |

## What reviewers say

### TrueZone

[App page](https://appshunter.io/ios/app/truezone/id1574232639)

**Features:** macOS Compatibility

**In-app purchases (2)**

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


### BioSteer

[App page](https://appshunter.io/ios/app/biosteer/id1667218537)

**In-app purchases:** none


## Frequently asked questions

### Is TrueZone free?

TrueZone is free to download, with in-app purchases available.

### Is BioSteer free?

BioSteer is free to download, with no in-app purchases.

### Do TrueZone or BioSteer have ads?

Neither TrueZone nor BioSteer shows ads.

### Which is updated more often, TrueZone or BioSteer?

TrueZone ships an update every 3 weeks, and BioSteer monthly. Most recently, TrueZone was updated on May 16, 2026 and BioSteer on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*