價格：免費
檔案大小：40.9 MB
版本需求：系統需求：iOS 8.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Duh! offers two simple modes. A RELAX mode in which the objective is to hold down a big red button as long as you can, and a FOCUS mode in which you need to continuously tap the button.
支援平台：iPhone, iPad