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Sketchbook vs Privacy Friendly Sketching: catalog facts
Sketchbook	Privacy Friendly Sketching
Freemium Sketchbook Pro for desktop is sold separately from the mobile app; check the stores for…	Free Free and open source under GPL-3.0 or later, with no ads.
Windows, macOS, Android, iOS	Android
Available on desktop and mobile Uncluttered interface focused on the canvas	Sketches are saved encrypted No ads and minimal permissions
Desktop and mobile versions are separate products No Linux version	Basic drawing features only Android only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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