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Voice vs auDAV: catalog facts
Voice	auDAV
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0-only license.
Android	Android
Remembers the position in every book Builds a library from a local folder	Plays audiobooks from Nextcloud or other WebDAV servers Tracks playback progress across devices
Android only Plays only audiobooks you already have as files	Requires a WebDAV server and login details Long seeks in large audiobook files can take over a minute
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.