Privacy

Without signing in

Your progress stays in this browser, or on your phone in the Android app. Nothing is sent to us.

Visit counts

We count page views with Vercel Web Analytics. It uses no cookies and doesn't identify you or follow you across sites.

Signing in with GitHub

We keep your GitHub account id and your progress (XP, answers, scores, settings and any worksheet notes) so they follow you between the website and the app. Signing out of the app deletes its sign-in token from your phone.

The Pro waitlist

If you join it, we keep your email and any note you write, only to email you once when Pro launches.

Removal

To have your progress or waitlist entry deleted, email zerowarrior108@pm.me. Data is stored with Neon (database) and Vercel (hosting).