Privacy

What we store

Nothing about the learner

Children do not have accounts and do not sign in — any account belongs to the adult. No name, age, or identifying detail about the child is collected anywhere. What an exercise remembers is performance, not identity: a rank or a small progress value for that one exercise, nothing about who answered or how.

Without an account, that progress stays on the one device you're using — closing the browser or clearing its storage resets it. With an account, it's saved to the adult's account instead, so the same progress shows up on another signed-in device too.

If you create an account

The account belongs to the adult. Signing in with Google stores:

• The email address on the Google account, and the account identifier
• Which plan the account is on — everything is free today
• Your progress on whichever exercises you've played while signed in

There is no separate database behind any of this; it is a small set of fields attached to the login itself.

No analytics, by default

There are no advertising scripts anywhere on this site. Page-level traffic (which pages get visited, roughly how many people, nothing tied to an individual) may be collected anonymously through Cloudflare's own analytics — no cookies, and nothing that identifies you. Nothing about how you use a specific exercise is tracked.

Third parties

Sign-in is handled by Google and by Supabase, our authentication provider. Hosting is Cloudflare. Nobody else receives anything.