Clue is a science‑based, data‑driven menstrual and reproductive health app and resource that helps people track cycles, discover patterns, and make informed health choices. Millions of people worldwide rely on Clue for clear tracking, educational content, and evidence‑based tools.

We offer a free app (Clue Basic) and a premium subscription (Clue Plus) that unlocks advanced insights, personalized predictions, pattern analysis, and features for specific needs: fertility (Clue Conceive), pregnancy mode, perimenopause support, and no‑period tracking. Clue combines intuitive tracking (200+ trackable experiences) with clinician‑reviewed content and shareable tools for users and partners.

Clue is committed to strict data privacy — we do not sell personal health data and design products to protect users. We partner with academic and global research institutions to use anonymized data for studies that close diagnostic gaps (e.g., endometriosis, PCOS, HMB). Clue also offers medical‑grade features and is CE‑marked where applicable.