Simple brain training game!

NO advertising!

Compete with other players through the 4 leaderboards!

No need to climb into the menu and deal with the settings!
Adjust the difficulty while playing in the Practice mode!

Choose a dark or light theme!

The game includes 3 modes.

1. Challenge:
- infinite number of tasks
- task time limit
- tasks for addition, subtraction, multiplication, division

2. Practice:
- tasks for one operation
- difficulty settings by 3 parameters: complexity, number of expressions, operation
- no time limits
- without losing

3. Marathon:
- fixed number of tasks
- task time limit
- without losing
- auto-increase/decrease complexity separately for each type of operation