Sleep Cycle – The goal of sleep cycle is self-explanatory; track an individual’s quality of sleep. The user’s sleep cycle is determined by tracking the amount of motion throughout the night, revealing the quality and quantity of sleep. This is accomplished by placing a phone under the pillow with the app active for the entire night. Results; including time in deep sleep, time awake, quality of sleep, and number of hours slept; are available upon waking and also stored for future reference. It is debatable whether the app is able to accurately measure the different phases of sleep. However, if nothing else it can benefit the user by keeping him or her interested in sleep habits. This app costs a one-time fee of $2.99.