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 sessionsAnswer a few questions whenever you have a few minutes. Your progress is saved automatically.
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, the app works without a connection. There are no ads.
Missed questions come backEach question you miss goes on a review list, so you can try it again later.
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.