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Notesnook vs ciphernotes: catalog facts
Notesnook	ciphernotes
Freemium A free tier covers unlimited notes and sync across devices. A paid Pro subscription adds…	Free Open source under the AGPL-3.0; the research does not mention paid plans.
Windows, macOS, Linux, Android, Web	Android, Self-hosted
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	Notes are encrypted on the device before syncing Works offline with cloud sync
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	Small project with few users so far No tagged releases on GitHub
Downloadable app, Web application	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
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 2, 2026

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