We all love naps, but there is one little think that everyone hates before taking a nap, setting an alarm. Opening alarm application is easy part, but then calculating how much you want to sleep is pain. "OK, now is 4: 47 pm and I want to sleep for about 25 minutes, let's just set alarm to. 47+25. 72. Ouch. 4: 12 pm, that was easy right? ".