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Moon+ Reader vs Librera Reader: catalog facts
Moon+ Reader	Librera Reader
Freemium Free version available, with a paid Pro version.	Free Free to download.
Android	Android
Very wide format support including Markdown and CHM Reads books inside ZIP and RAR archives and OPDS catalogs	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
Android only Some features require the paid Pro version	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-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 September 23, 2026

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