とけいのみかた　時計を使った計算ゲームアプリ。

Features とけいのみかた　時計を使った計算ゲームアプリ。

This is an app that allows you to study calculations using a clock.
The difficulty level is divided into details, so you can study according to your needs.
Furthermore, the questions are not fixed, but are determined by the AI ​​each time, so questions that suit each students ability will be asked.
It also has addition and subtraction functions, so you can improve your calculation skills.