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ShelfDroid vs Voice: catalog facts
ShelfDroid	Voice
Free Free and open source under the AGPL-3.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Offline listening from downloaded items Includes server and library management tasks	Remembers the position in every book Builds a library from a local folder
Requires your own Audiobookshelf server Android only	Android only Plays only audiobooks you already have as files
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0-or-later	License: GPL-3.0
Account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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