By using the proximity sensor of the smartphone, you can perform operations such as "start", "stop", and "reset" without touching your iphone. Therefore, it is convenient when you don't want to touch your smartphone because your hands are dirty when cooking.
the number of times you touch your iphone is reduced, so you can keep your hands hygiene. Of course, it can also be used as an ordinary timer.
It is very easy to set the time like a kitchen timer.
If you keep your hands near the sensor for more than 1 second, the screen becomes dark, but there is no functional problem.