iPhone Screenshots
Description
Challenge your limit of mental maths speed!
HOW TO PLAY
Answer 30 questions as fast as possible.
FEATURE
・Various Modes
3 difficulty levels (EASY, NORMAL, HARD)
5 operations (ADD, SUB, MUL, DIV, MIX)
・World Ranking
You can see your ranks at a glance.
・Self Ranking
You can enjoy fighting with yourself.
・Simple Design
You can focus on questions.
・Selectable Backgrounds
You can change the background according to your mood.