Clair Health is building the world’s first continuous, noninvasive wearable hormone monitor designed for women. Their mission is to make hormone-aware health actionable by decoding multi‑modal physiological signals into real‑time, personalized insights to support fertility, training & recovery, and transitions like perimenopause.

Clair’s wearable captures 130+ biomarkers (cardiovascular, thermoregulatory, autonomic, electrodermal) and uses machine‑learning models validated against FDA-registered at‑home hormone tests and independent clinical research. The platform combines continuous hormone tracking with sleep, recovery, and activity metrics in a single app to replace separate calendar, urine-test, and fitness workflows.