Clue Period & Cycle Tracker

Track your period, discover patterns in your menstrual cycle, and learn how your body works – with Clue.

Clue is more than just a period tracker. The app uses science and data to help you learn how your menstrual cycle affects your mind and body. With Clue, you get period, PMS, and ovulation predictions you can trust, detailed insights into how factors such as skin, stress and energy levels can change throughout your cycle, and a science-backed reproductive health encyclopedia at your fingertips. You can also set customizable reminders so you are always prepared for what’s coming. Backed by science, driven by ethics, and female-led, Clue never has and never will, sell user data.