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ShelfPlayer vs Storii: catalog facts
ShelfPlayer	Storii
Free Free; source code is published on GitHub.	Free Free and open source under the GPL-3.0.
iOS	Android
Native iOS interface Works with self-hosted Audiobookshelf libraries	Progress sync with Audiobookshelf Download manager with pause and resume
Requires an Audiobookshelf server iOS only	Requires an Audiobookshelf server Small, young project
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.