Main Features of Kotatsu
Online manga catalogues
Search manga by name and genres
Reading history and bookmarks
Favourites organized by user-defined categories
Downloading manga and reading it offline. Third-party CBZ archives also supported
Tablet-optimized Material You UI
Standard and Webtoon-optimized reader
Notifications about new chapters with updates feed
Integration with manga tracking services: Shikimori, AniList, MyAnimeList
Password/fingerprint protect access to the app
History and favourites synchronization across devices

Screenshots of Kotatsu