Settings
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.
Get the Android app
The same practice, on your home screen, without the browser bars. It signs you in from this browser, so there is nothing to set up again.
Android will warn you about installing outside the Play Store — that's expected for a direct download. Needs Android 6.0 or newer.
Download the appYour data
Every attempt, streak and preference lives in this browser only. Clearing site data resets it all.
The leaderboard is the exception. An account and a generated name are created automatically the first time you start a test — nothing to join, no email to type — and that name plus your score are what the board shows. Buying a plan requires confirming an email address with a six-digit code; being on the board alone does not, so a board name is a label rather than proof of who somebody is. Boards are weekly and cleared out about nine days after the week they belong to.