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MJ PDF vs Moon+ Reader: catalog facts
MJ PDF	Moon+ Reader
Free Free and open source under the GPL 3.0 licence.	Freemium Free version available, with a paid Pro version.
Android	Android
Library view with recent files, folders and reading history Dark mode for the PDF content as well as the interface	Very wide format support including Markdown and CHM Reads books inside ZIP and RAR archives and OPDS catalogs
Android only A reader with annotations rather than a full PDF editor	Android only Some features require the paid Pro version
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-only	License not stated
No account needed	Not stated if an account is needed
Not stated if it 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.