Clue is designed to make tracking your fertility accurate, fast and friendly. Keep track of your monthly cycle by entering data about your period, pain, mood, fluid, sexual activity and personal notes. Clue is a mobile application that calculates and predicts a user's period, fertile window, and premenstrual syndrome. It also informs users the most or least likely time for becoming pregnant and allows them to track more than 20 categories, including sex, sleep, pain, exercise, hair, skin, emotions and energy. The company announced plans to use the proceeds from its 2015 Series A funding to expand features of the mobile app and hire more staff. It plans to develop the app into a "platform for female health," integrating data from various sources. Clue has also partnered with universities such as Stanford, Columbia University, the University of Washington, and the University of Oxford to advance female health re