Train, take on challenges, and compete against your friends!
Learn and master the fundamentals of mental mathematics : whole numbers, decimals, negative numbers, fractions, and algebra. Improve while having fun with a playful, progressive, and addictive experience.
Earn coins, unlock different game modes, and customize your avatar with mathematical symbols and crazy hats.
đŻ DAILY CHALLENGE
One challenge for every player. Will you become the worldâs fastest calculator?
âď¸ DUEL MODE
Challenge your friends on the same phone. Better than a thumb war!
đž BATTLE THE BOSS
In every world, face a powerful boss. They might even be stronger than your friends⌠Can you defeat them all?
đĽ STREAK CHALLENGE
A no-mistake mode. How many correct answers can you chain in a row?
⥠SPEED CHALLENGE
Test your reflexes and become the fastest.
đ You play⌠and improve without even noticing it.
đ Download calcThis and discover the fun side of math!
Master the basics of mental math and prove it!