Math Card App

It is a simple calculation card application.
It supports addition, subtraction, multiplication, and division.

Features
・ History function
The date and time of study, points, and time taken are recorded in the history, so you can check the achievements later.

・ Calculation card editing function
Since you can edit the contents of the calculation card by specifying the range, you can intensively study the problems you are not good at or create difficult problems according to your level.