[Lizard]

Nope. Sorry. OmniFocus can't run in the background, so if we put an alarm feature in, you'd have to have your iPhone on and in OmniFocus in order for the alarm to trigger. Not very useful.

Until Apple adds some kind of background notifications to the SDK, you probably need to put your alarm-type reminders in the built-in Clock app on the iPhone (which does give you alarms even if your iPhone is asleep).