Smart Alarm Clock / sleep cycle app?

Smart Alarm Clock is a sleep cycle app that is supposed to use the phone's accelerometer to tell when you are in different sleep modes (you leave the phone on the bed overnight). I was skeptical about such apps actually working, but I have two friends who have had positive experiences using the Sleep Cycle app for their iPhones.

Has anyone used the Smart Alarm Clock or similar Droid app?

 

Pardon the bump but yeah, the program definitely doesn't work. It was showing the accelerator as moving at all times during the night (Android 2.2). Any know of an alternative?

 

Old thread I know, but I'm also very interested in people's experiences with any sleepcycle-like droid app.