kotatsuapp/kotatsu

Kotatsu is a free, open-source manga reader for Android. It connects to over 1,200 online manga sources, so you can search for titles, browse catalogues, and read chapters directly in the app without needing to visit individual websites manually. It runs on Android 6.0 and newer, and the interface is built using Material You design, which adapts to your device theme. The app supports both standard reading layouts and a Webtoon-optimized mode for vertically scrolling comics. You can organize favorites into your own categories, pick up where you left off using reading history, and set bookmarks. Chapters can also be downloaded for offline reading, and third-party CBZ archive files are supported if you already have local files. Kotatsu can sync data across multiple devices on the same account, and it includes a built-in self-updating mechanism so you can get new versions without going through a store. New chapter notifications and a recommendations feed are also included. For readers who track their manga on external services, Kotatsu connects to Shikimori, AniList, MyAnimeList, and Kitsu. There is also password and fingerprint protection if you want to lock access to the app. You can get the app from GitHub Releases (the recommended route), F-Droid, or nightly builds for testing. The app is translated into multiple languages through Weblate, and contributions to translations or code are welcome. The DMCA section in the README clarifies that the app does not host content itself and acts as a browser connecting to publicly available sites.