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Study companion

Who perches on your cards while you practise.

Adaptive practice

Random sets pull harder from topics you get wrong. Nothing tracked yet. Today's test never adapts, so it stays comparable between people.

Your data

Every attempt, streak and preference lives in this browser only. Clearing site data resets it all.

The leaderboard is the exception, and only if you join it. Joining stores your email address, the username you pick and your daily score on a server. Your email is never shown to anyone — the board shows a masked form like s••••@gmail.com unless you set a username. It is not verified yet, so treat it as an unconfirmed address rather than proof of who you are. Leaderboard entries are deleted two days after the day they belong to.

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