Aidoku
Free and open source manga reader for iOS and iPadOS
...Users can organize their library, track reading progress, and integrate with external tracking services such as AniList and MyAnimeList. The application emphasizes user control, offering configurable settings at both global and source-specific levels. It can be installed through multiple methods including TestFlight, AltStore, or manual sideloading, making it accessible even outside traditional app distribution channels.