Bored of fidgeting, try this app, which wipes stress and enhances your reflexes
Each expression will contain basically 3 operands and 2 operators, the resulting answer will be floated in the options bellow. All you need to do is evaluate the expression in your brain, and choose the right one.
For every correct response you will be given a score of +1 and for a negative response, your score will be deducted by 1.
The aim of this game is to solve as much expressions possible within 50 seconds. Your highest score is stored inside the game, such that you can challenge yourself, in order to beat that score.
Have fun, and feedbacks are highly appreciated!