Please try new update with synchronization, better E-INK optimization, fixes
Syncing across Android devices via Google Drive (reading progress, bookmarks, etc.)
Multiple profiles
TTS: character replacements, manual stress marks, RegEx rules
Additional settings and navigation in Musician’s mode
Additional functions reachable through UI
Miscellaneous improvements to UI and functionality
https://github.com/foobnix/LibreraReader/releases