What local storage means here
Your projects stay on your device by default. Here is what changes when you export or switch on sync.

An ordinary day
A timer writes to the local database. Starting it does not send a project name, a client name or a note to our server. The app can continue working offline.
The choices that move data
An export saves the columns you choose to a file. Optional sync sends encrypted records to the paired devices. Crash reports are a separate setting and start turned off.
Backups still matter
Local storage does not protect against a lost device. Keep regular exports or use a device backup you trust. The exact privacy and security claims on this demo must be replaced with the facts of your own app.