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MJ PDF vs Adobe Acrobat Reader: catalog facts
MJ PDF	Adobe Acrobat Reader
Free Free and open source under the GPL 3.0 licence.	Freemium Free to use; editing and conversion require a paid Adobe Acrobat subscription.
Android	Windows, macOS, Android, iOS
Library view with recent files, folders and reading history Dark mode for the PDF content as well as the interface	Faithful rendering of complex PDFs and forms Form filling, signing and annotation included free
Android only A reader with annotations rather than a full PDF editor	Frequent prompts to upgrade to paid Acrobat Large install compared with lightweight readers
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-only	License: Proprietary
No account needed	Not stated if an account is 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 October 1, 2026

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