價格：免費
檔案大小：9.5 MB
版本需求：系統需求：iOS 11.1 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Find relationships between numbers and enhance your math skills and brain speed. You will have three different complexity levels to test your sharpness and math ability, with 3x3, 4x4 and 5x5 grids of numbers.
You can play in a relaxed practice mode, or you can test yourself against the clock.
支援平台：iPhone, iPad