https://github.com/kalzEOS/stillshelf/compare/v0.6.8...v0.6.9/

StillShelf – Android audiobook/music player for Audiobookshelf/Navidrome. This project is heavily inspired by the iOS app Still. It originated from a specific need: there were few Audiobookshelf frontend clients on Android, so this app was built to fill that gap. Additionally, a suitable Navidrome frontend for music was not available, so support for it was integrated into the same app. The goal is to provide a smooth, practical Android experience for browsing, managing, and listening to Audiobookshelf and Navidrome libraries. Both m4b and mp3 formats are supported for audiobooks. License GNU General Public License v3.0