Hi Mushin I had a look on the button location. I was wrong, they seem always to be on the same position. I swapped them now in SleepAnalyser to make it consistent. Thank you for making me aware of it! Also you are right, the alarm should be removed when SleepAnalyser gets closed the normal way. If it crashs, the alarm stays active on purpose. But I anyway now added a cleanup function which removes any orphaned alarms.