Smart Alarm Clock: sleep cycles and Sleep tracker
Here's the link for Smart Alarm Clock.
I'm not sure about this app. I bought it yesterday on a whim because it was in my genius recommendations. I haven't slept good in weeks and weeks so I thought for a whole US dollar, I'd try it out.
It says it monitors your REM state and light sleep patterns and deep sleep patterns... Huh? How? Maybe someone can help me out with this? I'm kinda lost about this.
You can set sleep and wake sounds for a certain period of time, and also set the actual alarm time, but this thing will start the wake sound when it thinks you're ready to get up. It did for me about 10 minutes before I normally get up.
Still didn't notice anything different, so I'll try it for a week or so.