Addition!!! app for iPhone and iPad

Addition!!! gives you problems about addition for people who wants to learn addition, who wants to be good at addition, who just wants to enjoy doing addition quiz.
There are 4 levels in Addition!!!, Beginner, Easy, Standard, Difficult.

You can get points by the correct percentage of the quizzes, and using game center, you can compete with people all over the world.
There are bonus quizzes of multiplication, subtraction, division, too.

You can also play the quizzes
Which is more ?
How many ?
Learn the numbers
Find the rules

which are easier than math quizzes.

Game center can be used for the additional quizzes, too.