AlarmClock (gsAlarm) - does the app have to be running?

[EtherealRemnant]

Like do I need to have the window open or does it run in the background?

Also, do I need to open it each time I turn the phone on or does it automatically put itself up?

I really can't afford to be missing work anymore...... so I'm getting this app in the hope that 15 minutes will be enough to drag my butt out of bed (1 minute between each snooze) but I need to make absolutely certain its going to work.