價格：免費
檔案大小：19.6 MB
版本需求：需要 iOS 10.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
With this application you can develop the skills of adding numbers in the mind. At the start of the program, we configure the parameters: the range, number and time interval for the demonstration of one number. Next is a demonstration of the numbers of a given range in a random way. The next screen asks for your result and compares it with the correct one. This gives you the opportunity to train your memory, develop mental and analytical skills.
支援平台：iPhone