Tsumiru

A native client for reading manga & manhwa from a Suwayomi-Server instance, built for long webtoon binges on your phone.

Tsumiru (積みる) — a play on tsundoku (積ん読), the art of letting unread books pile up. For everyone whose backlog grows faster than they can read it.

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What it is

Tsumiru is a Flutter client for Suwayomi-Server, the self-hosted manga server. You point it at a server you already run. Tsumiru itself is only the reader (the server handles sources and downloads).

Runs on Android, Linux, Windows, macOS, and Web.

Feature highlights

Tsumiru is built for daily reading, especially webtoons / manhwa:

• Offline reading: download chapters to your device and read them with no connection to your server. Tsumiru keeps an on-device catalog with auto-keep rules and falls back to local copies automatically when the server isn't reachable.
• Rebuilt webtoon reader: multi-chapter continuous scrolling tuned for long manhwa strips, with pinch-to-zoom that keeps working while you scroll.
• First-run onboarding: a guided setup that finds your Suwayomi server on the network and walks you through connecting it.
• Incognito mode: pause reading history while you catch up, plus hideable library categories (Komikku parity).
• 13 built-in themes: plus a custom accent colour and an AMOLED black mode.
• Native authentication: simple_login and ui_login, with credentials kept in your device's secure storage.
• Flexible library: sort by last read, last chapter date, or total chapters; filter by reading status and bookmarks; and queue whole chapter ranges with bulk-download presets.

Download

Grab the latest build for your platform from the Releases page (Android APKs — universal + per-ABI — plus Linux, Windows, macOS, and Web).

Android, with auto-updates: add this repo to Obtainium and it will install and keep Tsumiru updated straight from GitHub Releases (no app store needed).

Requirements

You need a running Suwayomi-Server that Tsumiru can reach. On first launch, point it at your server's address.

Building

Flutter 3.44.6 (pinned via .fvmrc; Dart SDK ≥3.9).

flutter pub get
flutter gen-l10n
dart run build_runner build --delete-conflicting-outputs
flutter build apk            # or: linux / windows / macos / web

Credits & license

Tsumiru stands on the work of the Suwayomi project: Tachidesk-Sorayomi (the client Tsumiru grew from) and Suwayomi-Server (the server it talks to). Huge thanks to those maintainers and contributors.

Licensed under the Mozilla Public License 2.0 (see LICENSE). As with the upstream project, source files retain their MPL-2.0 headers.