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FairScan vs Open Note Scanner: catalog facts
FairScan	Open Note Scanner
Free Free and open source under the GPL-3.0, with no ads or paid upgrade.	Free The open-source application is available without a license fee.
Android	Android
Automatic detection, crop and enhancement OCR for searchable PDFs	Fully open source with no account or cloud component Automatic edge detection and perspective correction
Android only Deliberately simple, with few advanced editing options	Rougher than commercial scanner apps Development is intermittent
Downloadable app	Downloadable app
Open source	Open 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 22, 2026

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