Comparison

読書管理CatBook vs mimi

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

読書管理CatBook

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
Read full description

・タイトル、著者、巻数、メモ、どこまで読んだか、おもしろさ、日付などを記録することができます。 全て任意の項目です。タイトルだけの記録も可能です。 ・漫画の巻や雑誌の5月号、参考書の第4章と言った本を細かく分類する機能があります。 トップ画面ではタイトルの下に表示され、 今手元にどの巻があるのかなどを参照するのに便利です。 ・無料でお使いいただけます。画面下部にバナー広告があります。 ・ISBN検索機能付き(カメラで読み取る機能をv3.0から追加しました) ・SNS機能はありません ・データをcsv形式で保存することができます。(csvファイルを読み取ることはできません ・データをクリップボードにコピーして、ペーストすることができます。 任意のアプリでシェアしてください。 バージョン2.0より ・読書記録をカレンダーで記録することができるようになりました ・図書館モードを設定することで返却日の一覧を表示、プッシュ通知が受け取れるようになりました バージョン3.0より ・ISBNコードをカメラで読み取る機能を追加しました ・積読を応援!仮登録モードを追加しました。

About

mimi

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
Read full description

*Struggle with printed text? Read too slowly for study or pleasure? mimi converts any sentence into a lifelike voice, letting books, PDFs, and web articles flow straight into your ears. Start effortless, hands-free learning today! *Listen while you live Commute, childcare, housework—turn every “in-between” moment into time for blogs, novels, language courses, or news articles. No eyes, no hands, just ears. *Perfect for… Learners who can’t carve out long, quiet reading sessions ADHD or visual-fatigue readers who tire quickly Language students using listening & shadowing drills Situations where you can’t speak but need a voice substitute Commuters, parents, multitaskers who love “learn-while-doing” Readers with dyslexia or other reading disabilities *Key Features Paste or type any text and hear it instantly Ultra-natural voices powered by OpenAI TTS API Adjustable speed and multiple speaker styles Intuitive controls: play / pause / skip / repeat Save text and export speech as MP3 for easy sharing *Privacy First mimi collects no personal data. Text is sent to OpenAI only for on-the-fly voice generation and is never stored on any server. Read without reading, speak without speaking—unlock knowledge through your ears with mimi.

Screenshots

読書管理CatBook4 screens
mimi3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 5 level
読書管理CatBook versus mimi: the parameters behind the verdict, then further details
Parameter読書管理CatBookmimi
PriceFreeFree
Positive reviews75.0% of reviews — better50.0% of reviews
Update frequencyMonthlyEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size82 MB96 MB
Age rating4+4+
DeveloperSumie WatanabeBouzer LLC

Customer experience

読書管理CatBook

Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

mimi

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

読書管理CatBook

No in-app purchases

None

mimi

No in-app purchases

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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