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Storii vs Voice: catalog facts
Storii	Voice
Free Free and open source under the GPL-3.0.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Progress sync with Audiobookshelf Download manager with pause and resume	Remembers the position in every book Builds a library from a local folder
Requires an Audiobookshelf server Small, young project	Android only Plays only audiobooks you already have as files
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
Not stated if an account is 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.