# 認知シャッフル睡眠 vs 認知シャッフル睡眠法

The clearest difference is in-app purchases: 認知シャッフル睡眠 at none against 認知シャッフル睡眠法's 2. 認知シャッフル睡眠 also leads on update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (12.0 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. 認知シャッフル睡眠 asks for nothing beyond the download.

認知シャッフル睡眠 ships an update every 2 weeks, 認知シャッフル睡眠法 every 6 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 認知シャッフル睡眠 | 認知シャッフル睡眠法 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/cognitive-shuffle/id6483436496/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 49 MB | 136 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masao Sasaki](https://appshunter.io/developer/1651201873) | [mika kubo](https://appshunter.io/developer/1877061175) |

## What reviewers say

### 認知シャッフル睡眠

[App page](https://appshunter.io/ios/app/cognitive-shuffle/id6483436496)

This app guides you to sleep using a cognitive shuffle method. It reads out random words, allowing you to focus your imagination and drift off to sleep. Customize voice, duration, and playback settings for a personalized experience.

**Highlights:** Randomized word recitation, Customizable voice (male/female), Adjustable playback duration (1-30 mins), Adjustable word recitation interval, Adjustable recitation speed, Adjustable volume control, Notification sounds are OFF

**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 認知シャッフル睡眠 free?

認知シャッフル睡眠 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 認知シャッフル睡眠 or 認知シャッフル睡眠法 have ads?

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

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

認知シャッフル睡眠 ships an update every 2 weeks, and 認知シャッフル睡眠法 every 6 weeks. Most recently, 認知シャッフル睡眠 was updated on November 4, 2026 and 認知シャッフル睡眠法 on October 31, 2026.

---

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