AHYAPPminus

The subtraction Anzan app.
"Anzan" means mental calculation, and in this app all 100 problems are subtraction problems.

The time limit is 5 minutes.
How many questions will you be able to answer within 5 minutes?

If you think a problem is tough to answer, you can pass it.
It is extremely difficult to complete all the problems, but if you could, you could find a very rare Congratulation Screen.
Frantically improve your technique of subtraction to be able to see the Congratulation Screen.

The data of how many you can answer correctly are automatically saved,
and you can check the past 10 data.