If you want to measure the time, you can use this app. It allows you to use multiple functions such as lap measurements and split measurements. You can also use the built-in function to count up while touching the screen. This function allows you to set the duration and count up. You can save each measurement and label it. Each label can also be filtered and output as a graph. You can also customize the stopwatch in a wide range of ways such as making the entire screen an operation button, making the volume button an operation button, and counting up while touching the screen. You can also set the start and end time while using this stopwatch.