Clue is a science-based, data-driven menstrual and reproductive health app, trusted by 10 million users globally. The app helps individuals understand their body, menstrual cycle, ovulation, and reproductive health. It offers features tailored for various needs, including tracking menstrual symptoms, trying to conceive, navigating perimenopause, and managing fertility.

Clue's mission is to use data for good by illuminating blindspots in female health. With 15 billion data points and partnerships with research institutions such as Berkeley, 4M, and MIT, Clue aims to close diagnosis gaps for historically under-researched and misdiagnosed conditions like endometriosis, PMDD, and PCOS. The company is committed to strict data privacy practices and never sells or discloses user data to third parties or authorities.

Developed by a women-led team in Berlin, Germany, Clue is a CE-marked Class 1 medical-grade device emphasizing scientific accuracy and user trust.