BookPlayer vs LibriVox

BookPlayer is an audiobook player for DRM-free audiobooks, available on iOS, Android, and macOS. It plays M4B, M4A, MP3, and FLAC files, with chapter navigation, speed controls, smart rewind, volume boost, and an adjustable sleep timer. Library tools track progress, mark books finished, sort titles, and organize them into playlists or folders. Audiobooks can be imported through AirDrop, Files, iTunes File Sharing, ZIP archives, or personal Audiobookshelf and Jellyfin servers. On Android, users can also download or stream from those servers, including through Quick Connect and single sign-on. BookPlayer supports Audiobookshelf and Jellyfin, and automatic library tracking on Hardcover. VoiceOver support is listed for iOS and TalkBack for Android. The free plan includes core playback. BookPlayer Pro adds cloud sync, standalone Apple Watch playback, themes, and alternative app icons. Pro stores library files, progress, and bookmarks on its servers; its subscription is payable monthly or annually, with the price displayed in the app. The iOS project is licensed under GNU GPL version 3.0.

LibriVox is a free audiobook library built from volunteer recordings of public-domain books. Listeners can browse by author, title, genre or subject, and language, then play or download individual audio files, download a book ZIP, subscribe to RSS or use BitTorrent. Catalog pages provide 64 kbps and 128 kbps MP3 files, and most books also have an M4B option. Its podcast presents one book at a time in three audio installments per week. Recordings are accepted in all languages; volunteers need no prior experience or audition, just a voice, a computer and free recording software. The catalog API offers audiobook, track and author endpoints for apps that refresh catalog data. It returns 50 records by default, up to 500 per request, with offset batches for larger pulls. Recordings are donated to the public domain, though status can vary by country. LibriVox began in 2005 and is available on Android, iOS, Linux, macOS, web and Windows. The catalog can include older works with language or ideas some readers find offensive or antiquated.