Compare software

MJ PDF vs Librera Reader: catalog facts
MJ PDF	Librera Reader
Free Free and open source under the GPL 3.0 licence.	Free Free to download.
Android	Android
Library view with recent files, folders and reading history Dark mode for the PDF content as well as the interface	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
Android only A reader with annotations rather than a full PDF editor	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
No account needed	No account 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 September 23, 2026

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