# Pro Breathwork App vs Biostress

The clearest difference is in-app purchases: Biostress at none against Pro Breathwork App's 8. Biostress also leads on iOS requirement (13.4 vs 15.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Pro Breathwork App sells 8 one-off in-app purchases. Biostress asks for nothing beyond the download.

Pro Breathwork App ships an update every 2 months, Biostress monthly. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Pro Breathwork App | Biostress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 108 MB | 41 MB |
| Requires iOS | 15.2 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [JACKSON HEALTH AND FITNESS LIMITED](https://appshunter.io/developer/1664059444) | [Biostress Lab Ltd](https://appshunter.io/developer/1762589825) |

## What reviewers say

### Pro Breathwork App

[App page](https://appshunter.io/ios/app/pro-breathwork-app/id1664059442)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Foundations of Breathing | Free | one-time |
| Breathwork: Stress & Anxiety | Free | one-time |
| Mastering Breathing Light | $9.99 | one-time |
| Sports Performance | $99.99 | one-time |
| Breathwork for Movement | $99.99 | one-time |
| BREATHE EASY Programme | $99.99 | one-time |
| High Intensity Breath Training | $99.99 | one-time |
| 10 Week Ultimate Program | $199.99 | one-time |


### Biostress

[App page](https://appshunter.io/ios/app/biostress/id6444656152)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pro Breathwork App free?

Pro Breathwork App is free to download, with in-app purchases available.

### Is Biostress free?

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

### Do Pro Breathwork App or Biostress have ads?

Neither Pro Breathwork App nor Biostress shows ads.

### Which is updated more often, Pro Breathwork App or Biostress?

Pro Breathwork App ships an update every 2 months, and Biostress monthly. Most recently, Pro Breathwork App was updated on September 25, 2026 and Biostress on September 15, 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.*