The Sleep Cycle app uses the accelerometer in your iPhone to detect your movements while you sleep. You move in different ways throughout the night, and these movements are tied in with the different phases of sleep you pass through, from light sleep, to REM sleep to deep sleep, and back again.
A skills assessment is typically utilized in professional environments in which it is used to evaluate the productivity and professional potential of a person. This type of assessment can be used to analyze how well a possible new-hire might fit into a particular environment.
The GED Testing Program is used to certify high school-level knowledge and skills, and allows adults to prove what they know. The test provides a uniform measure of high school achievement, and is nationally recognized as a measure of high school knowledge and skills.