Graphs (blue lines) show how more you moved while sleeping. High level shows sharp movements, and low - gradual.
How does it handle two people in the bed, with one getting up before the other? Will the first person's movements alter the readings?
We've done a lot of testing with two persons in bed. Since you have the phone on your side of the bed your body will actually block the movement signals from the other person on most, if not all, beds.
Watch the couple sleeping
Does the EasyWakeup drain the iPhone/iPod Touch battery?
EasyWakeup use only 64 seconds of CPU time while 8 hours of using app in active mode. But battery can be drained by other background processes. Real test shows that EasyWakeup can be used 72 hours in active mode without charge.