Audiobook player for a Syncthing folder: positions and listening history live in one
audiobook.json next to the books. Source and changelog:
gitlab.com/symmetricity/audiobook.
For automatic updates add this page to Obtainium
(Add App → source type HTML): URL https://audiobook.symmetricity.online/apk/,
link filter audiobook-v[0-9.]+\.apk, version from the link name.
All files.