This app can enjoy quizzes on flags and capitals of the nations of the world.
The more you play this app, the more you acquire your knowledge.

You can enjoy 6 kinds of quizzes
・Nation Flag → Nation name
・Nation name → Nation Flag
・Mix quiz（Flag → Nation name,Nation name→ Flag）
・Nation name → Capital name
・Nation Flag → Capital name
・Capital name → Nation Flag

There is a response time of 10 seconds per question.
You can easily switch the sound on and off.