# Kageri vs 認知シャッフル睡眠法

The clearest difference is in-app purchases: Kageri at none against 認知シャッフル睡眠法's 2. Kageri also leads on update cadence (every 5 days vs every 6 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. 認知シャッフル睡眠法 sells 2 in-app purchases, starting at $1.99 per month. Kageri asks for nothing beyond the download.

Kageri ships an update every 5 days, 認知シャッフル睡眠法 every 6 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Kageri | 認知シャッフル睡眠法 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Size | 30 MB | 136 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kentaro Ogawa](https://appshunter.io/developer/1859107117) | [mika kubo](https://appshunter.io/developer/1877061175) |

## What reviewers say

### Kageri

[App page](https://appshunter.io/ios/app/kageri/id6758259184)

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

**In-app purchases:** none


### 認知シャッフル睡眠法

[App page](https://appshunter.io/ios/app/sleepwords/id6759151074)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepWords Premium (Monthly) | $1.99 | per month |
| SleepWords Premium (Yearly) | $19.99 | per year |


## Frequently asked questions

### Is Kageri free?

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

### Is 認知シャッフル睡眠法 free?

認知シャッフル睡眠法 is free to download, with in-app purchases available.

### Do Kageri or 認知シャッフル睡眠法 have ads?

Neither Kageri nor 認知シャッフル睡眠法 shows ads.

### Which is updated more often, Kageri or 認知シャッフル睡眠法?

Kageri ships an update every 5 days, and 認知シャッフル睡眠法 every 6 weeks. Most recently, Kageri was updated on October 25, 2026 and 認知シャッフル睡眠法 on October 25, 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.*