CatBook Downloads & RevenueCatBook: E-Ink Reader · App Store
고양이북
6 days old
CatBook: E-Ink Reader is #77 in Books Paid in South Korea and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperSUNGJAE KIM
CategoryBooks
Price500 KRW
Released
Rating★ 5.0 (1)
Version1.0
Age rating4+
First seen by us
4 Nov 2026
4 Nov 2026CatBook: E-Ink Reader update history & changes
Last change · 3 events since 2 Nov 2026Full timeline ↓Full timeline · 3 events
- 🆕CatBook: E-Ink Reader first spotted by AppInsider#12 in Top Paid · Books · South Korea
- 📦CatBook: E-Ink Reader version 1.0No release notes
- 🆕CatBook: E-Ink Reader released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
1 ratings
Measured
Best rank now
#77
Books PaidMeasured
CatBook: E-Ink Reader on the App Store
App details
App ID
6825828720
Publisher
SUNGJAE KIM
On the store since
Nov 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
6
EN JA KO ZH ES ZH
Size
3 MB
Also listed in
Books, Productivity
Where CatBook: E-Ink Reader's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | BooksPaid | #77 |
Apps near CatBook: E-Ink Reader on the chart
Books Paid, around #77.
Ratings
App Store, worldwide.
Rating
5.0 ★
1 ratings
Measured
Ratings
1
Measured
About CatBook: E-Ink Reader
CatBook is an e-book reader that shows PDFs, text and comics on a calm, eye-friendly E-Ink style screen. Pixel cats live on your bookshelf.
■ Easy on the eyes
• Turns the screen into black ink on paper to cut glare
• Three papers: Classic (warm off-white), High-contrast, and Night dark
• Adjust paper grain, ink contrast and warm paper tone (less blue light)
• Optional refresh flash on page turns, and lower brightness when the app opens
■ Pages that turn like a book
• Realistic page curl
• Text is split into pages that fit the screen exactly, with no scrolling
• Font size and layout settings
• Remembers where you stopped, plus bookmarks
■ Comics and scans, too
• Open ZIP/CBZ comics directly, without unzipping
• Image folders, JPG, PNG, WEBP, HEIC and animated GIF
• Pinch to zoom, automatic split of two-page scans, right-to-left reading, and margin-free fit
■ Easy import
• Import from the Files app
• Pick files from Google Drive (CatBook only sees the files you choose)
• Old Korean text files (EUC-KR) are detected automatically, so nothing turns into garbled text
■ Cat friends on your shelf
• Pixel cats walk across your books, hide and take naps
• 11 breeds. Adopt new cats with coins (optional in-app purchase)
■ Privacy
• No sign-up, no ads, no tracking. CatBook collects no personal data.
Languages: English, 한국어, 日本語, 简体中文, 繁體中文, Español
■ Easy on the eyes
• Turns the screen into black ink on paper to cut glare
• Three papers: Classic (warm off-white), High-contrast, and Night dark
• Adjust paper grain, ink contrast and warm paper tone (less blue light)
• Optional refresh flash on page turns, and lower brightness when the app opens
■ Pages that turn like a book
• Realistic page curl
• Text is split into pages that fit the screen exactly, with no scrolling
• Font size and layout settings
• Remembers where you stopped, plus bookmarks
■ Comics and scans, too
• Open ZIP/CBZ comics directly, without unzipping
• Image folders, JPG, PNG, WEBP, HEIC and animated GIF
• Pinch to zoom, automatic split of two-page scans, right-to-left reading, and margin-free fit
■ Easy import
• Import from the Files app
• Pick files from Google Drive (CatBook only sees the files you choose)
• Old Korean text files (EUC-KR) are detected automatically, so nothing turns into garbled text
■ Cat friends on your shelf
• Pixel cats walk across your books, hide and take naps
• 11 breeds. Adopt new cats with coins (optional in-app purchase)
■ Privacy
• No sign-up, no ads, no tracking. CatBook collects no personal data.
Languages: English, 한국어, 日本語, 简体中文, 繁體中文, Español
Latest updates
1.0