TabStyr collects, stores, and transmits no personal data.

All browsing-time data (active time per site, sessions, tab metadata,
settings) is stored locally on your device using the browser's storage
and IndexedDB. It never leaves your device.

The extension makes zero network requests (enforced by a Content
Security Policy with connect-src 'none'). There are no servers, no
accounts, no analytics, and no third-party services.

Backups you choose to export are written to a local file you control,
encrypted with a passphrase you set (AES-GCM). TabStyr never uploads them.

Full policy: https://tabstyr.com/privacy