I use the app most mornings to wake up and it works well. A couple of annoying things though. Even though I picked the "quiet" alarm setting, the alarm is a bit jarring. Also, I continue to get asked every fourth or fifth time to rate the app even though I choose to never rate the app (not zen to nag). Otherwise I like the app and prefer it to the built in alarm. Looking forward to a new version with improvements.
Jimncary about Alarm Clock - ZenAwake