Adaptive prep for the toughest school-entry exams — in 5-minute bursts on the subway, in bed, or between classes — and longer sessions at your desktop when you want them.
5-minute sessionsPick it up, answer a few, put it down. Progress saves itself.
Adaptive difficultyEvery question is picked for you — based on what you've already shown you know.
Works offline after the first launchOnce your questions are downloaded: a bus ride, a flight, anywhere — no ads.
Nothing you miss is lostEvery miss lands on a review list and comes back until it sticks.
Almost there.
Pick up where you left off, every time. Sign in to sync across devices, or just keep going on this one.
Phone and computerThe same progress on every device you sign in on.
Nothing gets lostChange phone or clear your browser — your work stays.
Optional — sync across devices
You can start without an account. After about 20 questions we'll ask you to sign in so your progress isn't lost.
Back up your progress?
Signing in keeps it safe if you change devices. The app stays free and works fully without an account.
Back up your progress?
Signing in keeps it safe if you change devices. The app stays free and works fully without an account.
To see this progress on another device, sign in there with the same account.