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FairScan vs Adobe Scan: catalog facts
FairScan	Adobe Scan
Free Free and open source under the GPL-3.0, with no ads or paid upgrade.	Free Free to download; advanced PDF features need a paid Acrobat Pro subscription.
Android	Android, iOS
Automatic detection, crop and enhancement OCR for searchable PDFs	Automatic boundary detection and perspective correction Built-in OCR for searchable PDFs
Android only Deliberately simple, with few advanced editing options	Combining and converting files requires paid Acrobat Pro Mobile only
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-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.