From Chris Mayer:
Brain App uses simple math to help keep your mind sharp. Studies have shown that solving simple math problems in rapid succession increases the blood flow in areas of the brain, this over time allows for faster responses and increased memory recollection ability. Solve as many equations as possible with the time limit. Points are awarded for solving each equation, and deducted for a wrong answer. You can choose to play for either 30 or 60 seconds at a time. Easy / Advanced / Genius Modes. Burst the numbered balloons from lowest to highest. There are two difficulty settings, in easy mode a point is awarded for each set of balloons you burst in the correct order. In Advanced Mode points are deducted when you make a mistake.