# 聴速mimix vs 参考書de英語脳

The clearest difference is in-app purchases: 聴速mimix at none against 参考書de英語脳's 4. 聴速mimix also leads on iOS requirement (9.0 vs 13.6). 参考書de英語脳's advantage is update cadence (every 3 weeks vs every 22 months). On price, ads and device support there is nothing between them.

Both are free to download. 参考書de英語脳 sells 4 one-off in-app purchases. 聴速mimix asks for nothing beyond the download.

聴速mimix ships an update every 22 months, 参考書de英語脳 every 3 weeks. The most recent releases landed on July 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 聴速mimix | 参考書de英語脳 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 48.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 27 MB |
| Requires iOS | **9.0** | 13.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Samark Corporation](https://appshunter.io/developer/673041246) | [Seiji Mukai](https://appshunter.io/developer/1228461062) |

## What reviewers say

### 聴速mimix

[App page](https://appshunter.io/ios/app/mimix/id673062573)

This music player allows precise control over playback speed, from 0.1x to 8.0x. It's useful for language learning, improving memory and concentration, and transcribing music. Note that some DRM-protected audio may not be playable.

**Highlights:** Adjustable playback speed (0.1x to 8.0x), 10-second rewind/forward, Single track repeat, Speed shortcut buttons, Independent sliders for position, volume, and speed

**Features:** macOS Compatibility

**In-app purchases:** none


### 参考書de英語脳

[App page](https://appshunter.io/ios/app/de/id1228461063)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30日間利用権 | $0.99 | one-time |
| 90日間利用権 | $2.99 | one-time |
| 180日間利用権 | $5.99 | one-time |
| 365日間利用権 | $11.99 | one-time |


## Frequently asked questions

### Is 聴速mimix free?

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

### Is 参考書de英語脳 free?

参考書de英語脳 is free to download, with in-app purchases available.

### Do 聴速mimix or 参考書de英語脳 have ads?

Neither 聴速mimix nor 参考書de英語脳 shows ads.

### Which is updated more often, 聴速mimix or 参考書de英語脳?

聴速mimix ships an update every 22 months, and 参考書de英語脳 every 3 weeks. Most recently, 聴速mimix was updated on July 7, 2026 and 参考書de英語脳 on September 15, 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.*