Have you ever suffered from a bad sleep schedule that you want to get away from? Don’t you know that using your mobile phone to tracks your sleep schedule is super easy? Sleep Fixer is our Windows Phone answer to this problem. It appears as an alarm clock app, tracks users’ sleep schedule, and visualizes the collected data. The app tracks users’ everyday sleep time, wakeup time, and wakeup mood. Then it uses the data to create multiple charts including the average time in bed, the average time of going to bad, the variance of bed time, etc., and generate a Sleep Score. The app provides a simple data structure and vibrant visualization, which enables the user to get a clear picture of how well he/she sleeps. Furthermore, by comparing the sleep scores generated from different time periods, users can interpret whether their sleep quality is improving.