People are getting into the habit of staying up late, which is a bad habit, so our development team developed an application for recording time reports. How does our application record people's sleep time? Before you go to bed, you click the button to start the timer. When you get up, you will know how long you sleep. This helps you to plan your sleeping time reasonably. At the same time, your sleep time data will be counted and reported in APP. In three different stages of a week, one month, a year, you can know your own average sleep time, the longest sleep time, and the shortest sleep time. Although we can not help you achieve the freedom of sleep, but as long as you keep your schedule and stick to it, you will be able to achieve the freedom of sleep.