Mobile Technologies, Applications and Software Design Doplor Sleep Sleep Monitoring Mobile Application by Yiling Liu Doplor Sleep is a bedtime monitoring application that takes the environmental noise of the hospital into consideration. The application uses smart algorithms to classify the captured sounds and translates the technical data into user-friendly illustrations and UI. The design has two purposes. The first is to help medical staff and patients be aware of the hospital noise as a sleep-disturbing factor harming people's physical and mental health. The second purpose is for researchers to further investigate the relationship between hospital soundscape and the patient's sleep hygiene.