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Notesnook vs Simplenote: catalog facts
Notesnook	Simplenote
Freemium A free tier covers unlimited notes and sync across devices. A paid Pro subscription adds…	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux, Android, Web	Windows, macOS, Linux, Android
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	Syncing is free and unlimited across every platform, notes keep a version history, and the whole thing stays…
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	There is no encryption of note contents on Automattic's servers, and no attachments, folders or rich formatting.
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0
Account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

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