Privacy
The desktop app writes two numbers, Seconds and TotalSeconds, to state.json under your local app data. It reads key state, mouse travel, scroll, gamepad slots, and the titles of windows already on screen. Those titles stay in memory long enough to tell a video tab from a music tab. They are not written to the file.
The app opens no network sockets and installs no background service. Deleting the Usage Timer folder removes the file.
This page does not run analytics. When checkout is available, Stripe handles payment under its own privacy policy.