This site collects no personal information — no names, addresses, birthdays or email addresses, and no accounts. Your quiz guesses and taps are never sent off your device; they are processed only inside your browser. The site is designed to be safe for children (COPPA-friendly by design: there is simply nothing to collect).
We use no advertising or tracking cookies and no analytics tags.
Your collected badges and settings are stored only in your browser (localStorage). They contain no personal information and are never transmitted. You can erase everything anytime with the reset button on the badge page. The quizzes work even if storage is unavailable.
If you tap a share button, your browser opens X (an external service) with a pre-filled post. Like any link, X then receives a standard web request including this page's title and address — but nothing is posted unless you post it yourself. External sites have their own privacy policies.
Our hosting provider (AWS) may temporarily keep standard access logs (such as IP addresses) for reliability and security. This is common to all websites; we do not use them to identify individuals.
For questions, data corrections or feedback, please use our contact form (for grown-ups; please don't include children's names or school names). The form is hosted by Google Forms, an external service with its own privacy policy.