Clear by design
Sync without giving up your nook.
Nook works on your device first. Sync is the bridge between devices, not the place your whole notebook has to live.
The short version
Write anywhere. Catch up later.
Use Nook locally with no account. When you enable Nook Sync, changes are associated with your Nook account and shared between your devices when the internet is available.
A closer look
What happens when you turn Sync on?
1. Your local notebook stays immediate.
Nook continues to read and write its local SQLite database first. You can keep using the app during a poor connection or no connection at all.
2. Changes travel when a connection is available.
Nook keeps track of local changes and sends them through the authenticated sync path. When another device reconnects, it can receive the account's changes.
3. Account security keeps notebooks separate.
Sync uses Supabase Auth and account-scoped security policies to associate synchronized content with the signed-in account. Transport is protected by HTTPS/TLS through the service infrastructure. Nook does not claim end-to-end encryption.
4. Sign out does not erase the device.
Signing out disables remote sync for that session. The local notebook remains on the device, ready for local use.
Sync is designed to be helpful, not magical. It can be delayed by offline time, rate limits, or service availability. Keep backups of anything important while Nook is in testing.