# A 30 Day Challenge vs Breathe Slow

The clearest difference is ads: A 30 Day Challenge at none against Breathe Slow's shown. A 30 Day Challenge also leads on update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

A 30 Day Challenge ships an update every 5 days, Breathe Slow every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | A 30 Day Challenge | Breathe Slow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 45 MB | 27 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [William le Bussy](https://appshunter.io/developer/1886160596) | [Jonathan Searle](https://appshunter.io/developer/1852308268) |

## What reviewers say

### A 30 Day Challenge

[App page](https://appshunter.io/ios/app/a-30-day-challenge/id6760772464)

**Features:** macOS Compatibility

**In-app purchases:** none


### Breathe Slow

[App page](https://appshunter.io/ios/app/breathe-slow/id6761548084)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is A 30 Day Challenge free?

A 30 Day Challenge is free to download, with no in-app purchases.

### Is Breathe Slow free?

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

### Do A 30 Day Challenge or Breathe Slow have ads?

Breathe Slow shows ads; A 30 Day Challenge does not.

### Which is updated more often, A 30 Day Challenge or Breathe Slow?

A 30 Day Challenge ships an update every 5 days, and Breathe Slow every 3 weeks. Most recently, A 30 Day Challenge was updated on October 31, 2026 and Breathe Slow on October 31, 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.*