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

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