Would you like to train your brain with flash mental arithmetic?
You can continue every day with calendar recording!
It is a completely free flash calculator app.
You can play by choosing a level from beginner to advanced.

Flash Mental Arithmetic (flash mental arithmetic) trains the ability to calculate instantly and is effective for training to train the brain! Anyone from elderly seniors to children can enjoy it with easy operation!

This app is recommended for the following people
・ Elderly seniors who want to do flash mental calculation with easy operation
・ Seniors who want to activate their brains
・ Those who want to maintain their calculation ability
・ People who want to kill time
・People who want to do flash mental arithmetic and flash calculation with a completely free app
・ People who want to train their mental arithmetic skills
・ People who want to practice flash mental arithmetic from 1 digit
・ People who want to solve a lot of 3-digit advanced problems
・ People who want to enjoy math arithmetic games

Download and train your mental arithmetic skills!