3 letter idioms in Japanese APK

How well do you know Japanese words?
There are many idioms to combine with three kanji, but there are many unknown words unexpectedly?

This application is completely free, there is no time limit, and even if you make a mistake you can challenge as many times as you like.
How many three letter idioms can you answer in a week?
It is amazing if you can achieve 1,000 words!

Every Monday to Sunday, we will randomly make different idioms from over 1,000 words.
Please correct three combinations with one quiz.
If you answer correctly, you can check the meaning of that word.

The grade will be cleared on Monday, you can challenge a new one.

By repeating this, you will find that you remember many words before you know.
I think there are discoveries of new concepts by knowing the words.

Why do not you remember a lot of 3 character idioms in game sense?
I think it will be useful for a little killing time, brain training, blur prevention.
Remember cool Japanese and boast to your friends!