The goal is simple:
Two formulas will show on the screen and you need to tap the one producing the BIGGER result.
Simply tap either the top or bottom half of the screen before the timer runs out!
As you progress, you will gain experience points (XP) and levels. Each new level brings an increased difficulty to the game.
If you want to continue practicing at a lower level, you can select to do so in the Levels menu, but keep in mind that youll only receive XP while playing at your max level.
All in all, a simple game to keep your brain a workout!