Karatu
Native reader. Your sources.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Karatu is a native iOS reader where you bring your own sources.
The app does not ship with a built-in catalog or library. Instead, you install small JavaScript source plug-ins from public repositories — exactly the same model as a media-server client like Plex or Jellyfin. The app is the reader; the content backend is up to you.
WHAT KARATU GIVES YOU
- A native iOS reader. Vertical (webtoon) and horizontal (paged) modes, pinch-zoom, double-tap to reset, tap-to-toggle full-screen, auto-advance to the next chapter.
- Per-page bookmarks, grouped by series.
- Offline downloads. Background URLSession keeps fetches running when the app is suspended; per-chapter status lives on the manga detail screen with a one-tap "Download all chapters."
- A real library. Sort by recently-read, recently-added, title, or chapters-read. Filter by currently-reading, has-downloads, unread-chapters-available, or by source.
- Reading history with per-chapter resume. Pick up exactly where you left off.
- Reading-time stats. Daily totals, current streak, longest streak, total time. Stored locally; nothing is sent anywhere.
- A clean settings screen with storage usage, per-source breakdown, and one-tap reset.
WHAT KARATU DOES NOT DO
- Ship sources. You provide them.
- Send any data anywhere. Karatu has no accounts, no telemetry, no third-party SDKs, no ads. The privacy manifest declares zero data collection.
- Verify, host, distribute, or endorse any source or repository. You are solely responsible for the content you choose to load.
FOR DEVELOPERS
Karatu's source SDK is a tiny JavaScript runtime: fetch, console.log, and registerSource. Sources implement four async methods (getPopular, search, getMangaDetails, getChapterPages) and return ordinary JSON. Anyone can write a source and host the manifest as a public file. See the project documentation for the full SDK contract.
PRIVACY
All app state — library, history, bookmarks, downloads, stats — is stored locally on your device. Karatu makes network requests only to URLs you have explicitly configured. There are no analytics, no tracking pixels, no third-party libraries that phone home. Uninstalling the app removes every byte.
REQUIREMENTS
iOS 17 or later. iPhone only.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
• Downloaded chapters now open without an internet connection. The reader and library both fall back to your downloaded copies when offline.
The developer, Umar Rufai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Umar Rufai
- Size
- 2.6 MB
- Category
- Books
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Cartoon or Fantasy Violence
Profanity or Crude Humour
Mature or Suggestive Themes
Guns or Other Weapons
Infrequent
Realistic Violence
Horror/Fear Themes
Alcohol, Tobacco, Drug Use or References
Sexual Content or Nudity
- Copyright
- © 2026 Umar Rufai