價格：免費
檔案大小：22.8 MB
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
How fast can you count?
Test your counting skills in this unforgiving mathematics speed challenge!
Within 15 seconds, try to solve as many math problems as possible.
But be careful,
ONE wrong answer and it's game over!
FEATURES:
- 4 categories, based on simple operations of Addition, Subtraction, Multiplication, Division.
- 25 levels in each category, formulated and tested questions with increasing difficulty per-level.
- Reach for the 3 stars if you have what it takes to be a math genius.
支援平台：iPhone, iPad