Guesswork is over.
Answers backed by science.

An AI-powered health companion that helps you understand your cycle and manage your health with personalized, evidence-based insights.

Your body isn't a black box.

Circae translates your body's signals into clear, actionable, science-backed knowledge.

From your first period through perimenopause, Circae adapts to your unique life stage—including TTC, pregnancy, and postpartum.

Track 150+ symptoms, integrate wearable data (BBT, RHR), and log hormone results. Your entire health story, all in one place.

Our AI identifies patterns related to conditions like PCOS or endometriosis, generating a shareable, data-backed doctor's report.

Every insight is backed by peer-reviewed science. We show our work—tap any recommendation to see the source study.

Get synthesized, evidence-based answers to complex health questions from an AI trained on a corpus of scientific literature.

True Anonymous Mode and in-app tools to export or delete your data at any time. Your health data belongs to you. Period.

We're just getting started. Here's what's next.

Look beyond next month with 12-cycle predictions for your period and ovulation, powered by your own biometric data.

Securely share selected cycle data with a partner and connect in moderated, anonymous forums for support and shared experiences.

Customizable reminders for medication and cycle phases, plus a home-screen widget to follow your cycle at a glance.

Targeted programs for your goals, from guided Kegel exercises to nutrition plans tailored to your current cycle phase.

Choose to contribute your de-identified data to a research trust, helping to close the gender gap in medical research.