This app has three modes.
In the lesson, you choose the answer that matches the calculation formula from two options and answer all 10 questions.
When you get a certain score in a lesson, the challenge for that lesson is released and you can move on to the next lesson.
For challenges, choose a time limit of 10 seconds, 30 seconds, or 60 seconds.
This is a mode where you compete to see how many questions you can answer correctly.
As you progress through the lessons, the arms will be released.
In Udedameshi, you don't just have to choose between two choices, you can find out the calculation ability by finding a mistake in a calculation formula, solving a calculation and inputting the answer, and more comprehensively.
Udedameshi comes in bronze, silver, gold, etc.
You can clear the battle by getting a certain number of points in each level.