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QR Scanner vs Decoder: catalog facts
QR Scanner	Decoder
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0-or-later licence.
macOS, Linux, Android	Linux
Scans and generates QR codes in one app No ads and no personal data collection	Scans from a camera or a screenshot Generates QR codes as well as reading them
Small project with limited development activity Only covers QR codes	Linux only Focused on QR codes rather than other barcode types
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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