Comparison

BookCircle vs Kakotte (カコッテ)

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

Head to head
About

BookCircle

This app helps you track reading progress, organize book details, and capture thoughts. It encourages building an active reading habit by monitoring finished books and summarizing insights.

Highlights
  • Track reading progress
  • Log books and pages read
  • Auto-fill book details
  • Write short reviews
  • Monitor reading habits
  • Organize book library
Features
Read full description

Engage with Your Books Like Never Before! BookCircle is your personal reading companion, designed to help you track your reading progress, organize book details, and capture your thoughts effortlessly. Whether you’re reading for learning or leisure, BookCircle makes sure every book becomes an insightful journey. Key Features: Track Your Progress – Log your books and the pages you read daily. Auto-Fill Book Details – Enter a title, and the table of contents fills in automatically. Write Short Reviews – Summarize your thoughts and build an active reading habit. Monitor Your Reading Habits – See how many books you finish each month. Organize Your Library – Easily manage your reading list in one place. Start your journey towards a more engaged and mindful reading experience today!

About

Kakotte (カコッテ)

This app helps you retain what you read by letting you capture important parts of books, articles, and videos. You can circle content to save it, add notes, and track your reading time with a growing virtual tree. It works offline and prioritizes user privacy.

Highlights
  • Circle and save content from any screen
  • Organize captured content by book or topic
  • Add handwritten notes and annotations
  • Track reading time with a virtual tree
  • Offline functionality for privacy
  • Sync across devices with iCloud backup
Features
Read full description

読んで、忘れる。それをやめるための読書アプリです。iPad でも iPhone でも使えます。 線を引いたページは、たいてい二度と開きません。読んだ時間だけが積み上がって、中身は残らない。Kakotte は、気になったところを指でぐるりと囲むだけで、読んだものを手元に残します。 ■ 囲うだけ スクリーンショットを撮って、残したいところを指で囲みます。それだけでブックに保存されます。全部残したいときは、囲わずにそのまま保存もできます。 ■ 本も、記事も、動画も 電子書籍だけではありません。Web の記事も、動画の 1 コマも、画面に映るものなら同じやり方で残せます。ひとつの棚にまとまります。 ■ 読書を止めずに取り込む スクリーンショットの確認画面から共有シートで Kakotte に送れば、アプリを切り替えずに取り込めます。ショートカットに登録すれば、読んでいる画面のまま囲う画面が開きます。iPhone では、背面をトントンとたたく(背面タップ)だけで呼び出せます。 ■ 本ごとにまとまる 取り込んだものは、あとからまとめて本ごとに振り分けられます。ページに見出しを付けたり、お気に入りに入れて別に一望したりできます。1 画面に 1 ページずつ、紙をめくるように見返せます。 ■ 書き込める 切り抜きの上に直接ペンで書けます。線を引く、丸で囲む、余白に一言足す。紙の本にしていたことが、そのままできます。 ■ 続けた分だけ、チシ木が育つ 読書の時間を計れます。1 つ囲うと葉が 1 枚増え、800 枚で木が茂ります。そこから 100 枚ごとに、りんごが 1 つずつ実ります。1 日 5 枚のペースなら、りんごが 10 個そろうのがちょうど 1 年です。 ■ 端末の中だけで動きます 文字の読み取りも要約も、端末の中で処理します。取り込んだ画像が外部のサーバーへ送られることはありません。 ■ 料金 ブック 3 冊までは無料です。4 冊目からは Kakotte プレミアム(月 290 円/年 2,500 円・年額は 7 日間無料)で、冊数の制限がなくなり、データを iCloud にバックアップできます。バックアップをオンにすると、同じ Apple アカウントの iPad と iPhone でブックがそろいます。 利用規約(アプリ内購入の利用者契約):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BookCircle4 screens
Kakotte (カコッテ)4 screens

Verdict

The call

The clearest difference is review sentiment: Kakotte (カコッテ) at 100% against BookCircle's 50%. Kakotte (カコッテ) also leads on update cadence (every 3 days vs weekly). BookCircle's advantage is monetization model (free vs freemium) and iOS requirement (16.6 vs 26.0). On price, ads, 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

BookCircle ships an update weekly, Kakotte (カコッテ) every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
BookCircle versus Kakotte (カコッテ): the parameters behind the verdict, then further details
ParameterBookCircleKakotte (カコッテ)
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings2 — better—
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better26.0
Further details — not scored
Size22 MB45 MB
Age rating4+4+
DeveloperGenau FactoryRei Sato

Customer experience

BookCircle

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive50.0%
Neutral33.3%
Negative16.7%

Kakotte (カコッテ)

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BookCircle

No in-app purchases

None

Kakotte (カコッテ)

No in-app purchases

Questions

Is BookCircle free?
BookCircle is free to download, with no in-app purchases.
Is Kakotte (カコッテ) free?
Kakotte (カコッテ) is free to download, with no in-app purchases.
Do BookCircle or Kakotte (カコッテ) have ads?
Neither BookCircle nor Kakotte (カコッテ) shows ads.
Which is updated more often, BookCircle or Kakotte (カコッテ)?
BookCircle ships an update weekly, and Kakotte (カコッテ) every 3 days. Most recently, BookCircle was updated on October 24, 2026 and Kakotte (カコッテ) on October 25, 2026.

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