How smart are you?
Take this challenging test of math to see how smart you are.
If you like, you can compare your score with friends to see who is the smartest. In fact, you can also play online, to compete with others.
Give it a spin to see your rank…
Better compatibility with iOS8 and new devices.
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Challenge friends and check leaderboards and achievements.
With Family Sharing set up, up to six family members can use this app.