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Notesnook vs Lockbook: catalog facts
Notesnook	Lockbook
Freemium A free tier covers unlimited notes and sync across devices. A paid Pro subscription adds…	Freemium The free plan includes 25 MB; the 30 GB plan costs $2.99 monthly.
Windows, macOS, Linux, Android, Web	Windows, macOS, Linux, Android, iOS, Command line
End-to-end encrypted on device with XChaCha20-Poly1305 and Argon2, so the service holds no readable data The full client codebase is published, which makes the privacy claim auditable	End-to-end encryption for stored files Supports notes, sketches, and other files
An account is required; it is a sync service, not a local-only app Encryption means no server-side search, and losing your password loses the notes	Free storage is limited to 25 MB The project describes itself as being in open beta
Downloadable app, Web application	Downloadable app, Hosted service
Open source	Closed source
License: GPL-3.0	License: Unlicense
Account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 8, 2026

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