Calculation - Basic Calculator 與 iSimpleStopWatch 使用情況與統計

Simple stopwatch or timer: - very easy to use - disabled sleep mode - designed for a long-term run - large font with screaming color will help you to see from far away - dark mode to save display - frame rate reduced to save energy consumption Free to use with Ads banner; required internet connection. Paid version will disable all ads, and no internet connection will be required.