# 読書管理CatBook vs mimi

The clearest difference is ads: mimi at none against 読書管理CatBook's shown. mimi also leads on monetization model (free vs ad-supported). 読書管理CatBook's advantage is review sentiment (75% vs 50%). On price, update cadence, 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.

読書管理CatBook ships an update monthly, mimi every 3 weeks. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | 読書管理CatBook | mimi |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 82 MB | 96 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sumie Watanabe](https://appshunter.io/developer/1349237972) | [Bouzer LLC](https://appshunter.io/developer/1809286489) |

## What reviewers say

### 読書管理CatBook

[App page](https://appshunter.io/ios/app/catbook/id1565953416)

Track your reading progress, including title, author, and reading status. Organize books by series or magazine issues and get reminders for library book returns. Easily add books via ISBN scan.

**Highlights:** Record title, author, volume, notes, and reading progress, Organize books by series or magazine issues, Library mode with return date reminders, ISBN search with camera scanning, Save data to CSV, Calendar view for reading records

**Features:** macOS Compatibility

**In-app purchases:** none


### mimi

[App page](https://appshunter.io/ios/app/mimi-dyslexia-tts/id6747191021)

This app transforms any text into natural-sounding speech, making it easier to consume books, articles, and study materials hands-free. It's ideal for multitasking, language learning, or for individuals with reading challenges.

**Highlights:** Text to speech conversion, Natural-sounding voices, Adjustable speech speed, Save text and export audio, Hands-free listening, Privacy-focused data handling

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

**In-app purchases:** none


## Frequently asked questions

### Is 読書管理CatBook free?

読書管理CatBook is free to download, with no in-app purchases.

### Is mimi free?

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

### Do 読書管理CatBook or mimi have ads?

読書管理CatBook shows ads; mimi does not.

### Which is updated more often, 読書管理CatBook or mimi?

読書管理CatBook ships an update monthly, and mimi every 3 weeks. Most recently, 読書管理CatBook was updated on November 11, 2026 and mimi on November 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.*