[About this app]
Through calculation and mental arithmetic practice, you can train your calculation skills!
It's simple, but let's activate your head through thinking and calculating!

- Let's start with once a day and activate your brain by reading the question aloud and solving the problem.
- Since there are various game modes and difficulty levels, you can challenge simple problems to difficult problems.
- Since you can solve the puzzles by yourself, you can train your calculation skills.
- You can play calculation problems like a game.
- Let's try how many questions you can answer correctly through the time limit mode.

[Recommended for these people]
- People who want to activate the brain (calculation power)
- People who want to improve their calculation skills even a little, or who want to overcome
- People who want to prevent cognitive decline

[Others]
This app helps my parent's cognitive decline
It's designed to prevent.
I think that the purpose of use is various,
I would appreciate it if you could use it.