Clarity Atlas vs Notesnook
The short version
- Notesnook is a private notebook: end-to-end encrypted by default, synced through its own service, notes living inside the app's system.
- Clarity Atlas starts from a different premise: your notes are plain Markdown files on your device — readable by any app, forever — with encryption applied where it matters (local-only notes, and everything that syncs through Atlas Cloud).
- And the bigger difference: Clarity Atlas adds working AI — auto-filing, question answering with citations, voice-memo cleanup. Notesnook's pitch is privacy; ours is privacy plus an assistant.
Side by side
| Clarity Atlas | Notesnook | |
|---|---|---|
| Notes stored as plain files you can open anywhere | ✅ Markdown on your device | — (encrypted database; export to files) |
| End-to-end encrypted sync | ✅ (Atlas Cloud; or your own bucket) | ✅ — by default, its core feature |
| AI auto-filing and titling | ✅ | — |
| Ask your notes, sources cited | ✅ | — |
| Voice memos → clean notes | ✅ | — |
| App lock (biometric/PIN) | ✅ optional | ✅ |
| Note history | Undo log for AI actions | ✅ version history |
| Encrypted public note sharing | — | ✅ (Monographs) |
| Works fully offline, no account | ✅ — no account, ever | Account needed for sync |
| Open source | — | ✅ |
| Price | Free (ads on Android) · $2.99 removes ads · $6.99/mo Atlas Cloud | Free tier · Pro subscription |
Choose Notesnook if…
You want encryption-by-default on everything, note version history, encrypted public sharing, or open-source clients. It's a well-made, principled app.
Choose Clarity Atlas if…
You want your notes to exist as ordinary files no company controls — including us — and you want AI doing the organizing and answering. Privacy where it counts, files you can walk away with, and an assistant that earns its keep.