# Zabuton vs AI Apnea Trainer

The clearest difference is update cadence: AI Apnea Trainer at every 11 days against Zabuton's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Zabuton ships an update every 3 months, AI Apnea Trainer every 11 days. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Zabuton | AI Apnea Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Size | 18 MB | 18 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Harmonic Projects LLC](https://appshunter.io/developer/1772974838) | [hayato yasuhisa](https://appshunter.io/developer/1873491175) |

## What reviewers say

### Zabuton

[App page](https://appshunter.io/ios/app/zabuton/id6736668920)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Apnea Trainer

[App page](https://appshunter.io/ios/app/ai-apnea-trainer/id6758535310)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Zabuton free?

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

### Is AI Apnea Trainer free?

AI Apnea Trainer is free to download, with no in-app purchases.

### Do Zabuton or AI Apnea Trainer have ads?

Neither Zabuton nor AI Apnea Trainer shows ads.

### Which is updated more often, Zabuton or AI Apnea Trainer?

Zabuton ships an update every 3 months, and AI Apnea Trainer every 11 days. Most recently, Zabuton was updated on October 7, 2026 and AI Apnea Trainer on September 29, 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.*