Privacy

Everything this site does — counting, timing, verdicts, score cards — happens inside your browser, on your hardware. Your clicks never travel.

Data that exists, and where

Personal bests are numbers in your browser's local storage, keyed by test window and technique tag. They stay on the machine and browser where you set them. Score-card images are drawn by a canvas element on your device and saved wherever you choose. Challenge links carry test settings — window length, technique — never scores or identities.

Data that doesn't exist

There is no account system, no leaderboard database, no analytics script watching your cursor, no advertising SDK and no cookie banner because there are no tracking cookies. The site is static files; the host (Cloudflare Pages) shows us aggregate page-view counts without identifying anyone.

The one outbound request

Fonts come from Google Fonts on first load, cached afterward. That request exposes your IP and browser headers to Google's font servers, as any request to any host does. Nothing else leaves.

Erasing your traces

Clear this site's data in your browser settings and every personal best is gone. There's no copy to ask us about — we never had one.

Anything unclear, ask via the contact page. Reviewed 3 July 2026.