# ChillMaster vs Box Breathing

The clearest difference is in-app purchases: ChillMaster at none against Box Breathing's 2. ChillMaster also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Box Breathing sells 2 in-app purchases, starting at $4.99 per 7 days. ChillMaster asks for nothing beyond the download.

ChillMaster ships an update every 6 weeks, Box Breathing every 5 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ChillMaster | Box Breathing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Size | 19 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sylwester Kowalski](https://appshunter.io/developer/1894039216) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### ChillMaster

[App page](https://appshunter.io/ios/app/chillmaster/id6762401437)

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

**In-app purchases:** none


### Box Breathing

[App page](https://appshunter.io/ios/app/box-breathing-calm-sleep/id6772156037)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is ChillMaster free?

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

### Is Box Breathing free?

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

### Do ChillMaster or Box Breathing have ads?

Neither ChillMaster nor Box Breathing shows ads.

### Which is updated more often, ChillMaster or Box Breathing?

ChillMaster ships an update every 6 weeks, and Box Breathing every 5 weeks. Most recently, ChillMaster was updated on October 31, 2026 and Box Breathing on November 5, 2026.

---

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