For more precise tracking, Sleep Better , you must calibrate, putting a Smartphone on the bed next to the pillows, and some scenarios that accompanied my daily routine. For example, exercise or a hearty dinner for the night.
In the end, will be ready in the morning schedule, which will see the overall duration of sleep, its effectiveness, and other settings. In the pro version with additional graphics and ringtones for alarm, as well as a diary of dreams.