Lay it on its face on your mattress and it uses the accelerometer to measure your movements in bed. You set an alarm clock for 7am and any time it senses movement between 6:30 and 7, it will wake you up in an attempt to not wake you during deep sleep.
App for recording what you eat. Lets you build foods and save them. Large database
Very simple to blog with
Uses the GPS to record your movement. Shows your path, speed,...