かけ算の暗算：天才が使ってる暗算方法をマスター

It is a mental arithmetic enhancement application that specializes only in mental arithmetic of multiplication.

Nevertheless, it can also strengthen the working memory of the brain.

In other words, this app can also do brain training.

By the way, the mental arithmetic method used in this app is the method used by the calculation genius Rudiger Gum.

(Rudiger Gum is a genius of calculation that answers "87 to the 20th power" in 1 minute 56 seconds)

This application is recommended for such people.

・ Anyway, I want to master the mental arithmetic of multiplication (up to 6 digits x 6 digits)

・ I like simple games (basically just calculate or check hints)

・ I want to train my mental arithmetic and brain in a short time every day (playable from about 1 minute a day)

・ I want to get results in work and study (strengthening working memory is useful for both)

・ I want to improve the processing power of the brain

The goal of this app is to be smart while playing games in the daily gaps.

We are developing and maintaining this application hoping that it will enrich your life.