Progress Tab collects nothing by default.

All your data (language choice, settings, guess/calibration history) is stored locally on your device and never leaves it.

Optional, opt-in telemetry: on the first new tab the extension asks once whether you agree to share anonymous usage events (a random install ID containing no personal data, the event type, which fact was shown, guess accuracy, interface language, extension version). Nothing is sent unless you agree. You can turn it off any time in the extension options; opting out erases the install ID, so a later opt-in starts a fresh, unlinkable identity.

No personal information is collected. Nothing is sold or shared with third parties.

Full policy: https://progresstab.app/privacy Contact: admin@progresstab.app