# Silent Sleep Training vs M2H

The clearest difference is update cadence: M2H at fortnightly against Silent Sleep Training's every 4 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.

Silent Sleep Training ships an update every 4 months, M2H fortnightly. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Silent Sleep Training | M2H |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 48 MB | 140 MB |
| Requires iOS | 16.5 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Asate AG](https://appshunter.io/developer/1552068271) | [M2H Stoffwechselzentrum GbR](https://appshunter.io/developer/1887781585) |

## What reviewers say

### Silent Sleep Training

[App page](https://appshunter.io/ios/app/silent-sleep-training/id1552068269)

**In-app purchases:** none


### M2H

[App page](https://appshunter.io/ios/app/m2h/id6761097528)

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

**In-app purchases:** none


## Frequently asked questions

### Is Silent Sleep Training free?

Silent Sleep Training is free to download, with no in-app purchases.

### Is M2H free?

M2H is free to download, with no in-app purchases.

### Do Silent Sleep Training or M2H have ads?

Neither Silent Sleep Training nor M2H shows ads.

### Which is updated more often, Silent Sleep Training or M2H?

Silent Sleep Training ships an update every 4 months, and M2H fortnightly. Most recently, Silent Sleep Training was updated on October 14, 2026 and M2H on October 12, 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.*