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Moon+ Reader vs Chaka Book Reader: catalog facts
Moon+ Reader	Chaka Book Reader
Freemium Free version available, with a paid Pro version.	Free Free and open source under AGPL-3.0-or-later.
Android	Android
Very wide format support including Markdown and CHM Reads books inside ZIP and RAR archives and OPDS catalogs	Opens a very wide range of document and comic formats Reads files directly from archives
Android only Some features require the paid Pro version	Android only No release downloads listed on the repository
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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