Comparison

読書カレンダー vs Cocoas

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

Head to head
About

読書カレンダー

This app helps book lovers beautifully record and manage their reading history using a calendar view. Easily register books via barcode scan or title search, and organize your digital bookshelf. Premium features offer advanced reading progress visualization and goal tracking.

Highlights
  • Calendar-style reading log
  • Visual book history on calendar
  • Barcode book registration
  • Digital bookshelf management
  • Reading progress visualization
  • Reading goal setting
Features
Read full description

◇Beautifully Record and Manage Your Daily Reading on a Calendar◇ BookCal (Bukukare) is a simple, intuitive reading log app designed for book lovers. View your reading history at a glance in a calendar format and build a consistent reading habit. 【Key Features】 Calendar-style Reading Log ・Visually record your daily reading on a calendar ・Book cover images appear on the calendar, making your reading history instantly visible ・Quickly look back at past reading records Easy Book Registration ・Instantly register books by scanning barcodes ・Search for and add books by title Digital Bookshelf ・Manage the books you've read on a beautifully organized bookshelf ・Find specific books quickly using search, filter, and sort functions ・Categorize books by reading status (Reading, Finished, Unread) Visualize Reading Progress (Premium Feature) ・Analyze reading patterns with monthly and yearly graphs ・Set reading goals and track your progress ・View detailed statistics (total books read, consecutive reading streaks, etc.) Start your reading journey with BookCal—designed to provide a richer reading experience for everyone who loves books! 【BookCal Terms of Service】 https://tsutsunoidoblog.com/book_diary_terms_of_service/ 【BookCal Privacy Policy】 https://tsutsunoidoblog.com/bookdiary_privacy_policy/

About

Cocoas

Features
Read full description

Cocoasは、読書のひとときを邪魔せず、 心に残った気づきやセリフをそっとメモできる本管理アプリです。 落ち着いたデザインと手書き風の表現で、 まるでリングノートに書きとめるように自然に記録できます。 あとから見返したくなる、あなたらしい読書メモが残せます。 【Cocoasの3つの魅力】 1. 読書を妨げない、手書き風の気軽なメモ ・思いついた瞬間にすぐ書ける ・名言やセリフもさっと記録 ・ノートのような温かいデザインで、書くのが心地よい 2. AIがあとからやさしく整理 ・散らばったメモを自動でまとめて要約 ・ポイントを見逃さず、学びを深める ・読書の記録が一つのストーリーに 3. あなたの読書がつながる体験に ・本棚を「積読・読書中・読了・お気に入り」でわかりやすく整理 ・ナレッジグラフで、メモ同士のつながりを発見 ・表紙画像も自動取得。本探しもスムーズ 【こんな方におすすめ】 ・本を読みながら、気づきをメモしたい ・読書体験を、あとからじっくり振り返りたい ・静かに、でもしっかりと読書を楽しみたい ・自分だけの本棚を丁寧に育てたい Cocoasが届けたいのは、 「忙しい日常の中で、ほっと一息つける読書時間」。 あなたの読書のそばに、やさしく寄り添うアプリです。

Screenshots

読書カレンダー4 screens
Cocoas4 screens

Verdict

The call

The clearest difference is in-app purchases: Cocoas at none against 読書カレンダー's 4. Cocoas also leads on iOS requirement (15.1 vs 17.0). 読書カレンダー's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads 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. 読書カレンダー sells 4 in-app purchases, starting at $2.99 per month. Cocoas asks for nothing beyond the download.

UpkeepUpdate frequency

読書カレンダー ships an update every 8 days, Cocoas every 3 weeks. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 5 level
読書カレンダー versus Cocoas: the parameters behind the verdict, then further details
Parameter読書カレンダーCocoas
PriceFreeFree
Positive reviews66.7% of reviews—
Update frequencyEvery 8 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size56 MB38 MB
Age rating4+4+
DeveloperManabu TsuTsuiKOJI ASAMIZU

In-app purchases

4 purchases

読書カレンダー

Subscriptions2
  • 月額サブスクリプション$2.991 Month
  • 年割サブスクリプション7 Days trial$22.991 Year
One-time2
  • 買い切りプラン(24時間限定)$14.99
  • 買い切りプラン$29.99
None

Cocoas

No in-app purchases

Questions

Is 読書カレンダー free?
読書カレンダー is free to download, with in-app purchases available.
Is Cocoas free?
Cocoas is free to download, with no in-app purchases.
Do 読書カレンダー or Cocoas have ads?
Neither 読書カレンダー nor Cocoas shows ads.
Which is updated more often, 読書カレンダー or Cocoas?
読書カレンダー ships an update every 8 days, and Cocoas every 3 weeks. Most recently, 読書カレンダー was updated on October 16, 2026 and Cocoas on October 3, 2026.

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