My sister, Becky (you can read her blog at www.thekisers.blogspot.com), introduced Katie and I to this App this past weekend. You just turn it on with the alarm before you go to bed and it measures your sleep cycle through the night and then wakes you up when you are in your lightest sleep. They say that when you wake up at your lightest sleep cycle it is like waking up without an alarm. It seems to have worked for us so far. It's also interesting to note that as it turns out this App is HUGE in Japan! Anyways, I'm not sure exactly how it works but I have learned that I'm not a great sleeper and Katie is. It's a $.99 download and worth checking out. You can also read more about this app at http://www.lexwarelabs.com/sleepcycle/. I can't believe everything that my cell phone can do! Isn't the new iPhone coming out soon?