Clue is a science-based, data-driven menstrual and reproductive health app, trusted by over 10 million users globally. The app helps individuals understand their bodies and menstrual cycles through tracking and personalized insights.

Clue's mission is to empower people to better understand their menstrual cycles and reproductive health using data and science. Clue aims to illuminate blindspots in female health by partnering with research institutions to close diagnosis gaps for conditions like endometriosis, PMDD, and PCOS.

The company emphasizes privacy and data security, ensuring users' private health data is never sold or used against them, under strict data privacy laws including GDPR compliance.

Clue offers both free and premium subscription models, including Clue Basic for essential cycle tracking and Clue Plus for advanced cycle insights, personalized tracking modes, and expert content access.