Needs a screenlock

This app needs a screenlock desperately. When I try to use it while my phone is in my hand (running, or using headphones, for example) its IMPOSSIBLE not to make contact with the screen, which pauses the app or changes the settings on the slightest contact. This is basic stuff. Please add a screenlock or, if there is one, make it easy to find.

GTOGfan about H-I-I-T-Timer