Privacy
No accounts. You never give us a name, email or phone number.
Your answers stay on your device. Progress is saved in your browser so you can pick up where you left off. Clearing site data removes it.
Anonymous usage counts. We record events like "quiz started" or "card shared" with a random per-visit id — never who you are — so we can see which questions are confusing or most shared.
Challenge links contain a random code and, only if you switch it on, your score. Nothing else.
Sharing is always your choice. We never post for you or message your contacts.
Fonts are loaded from Google Fonts, which may see your IP address when they load.