Get early access
Cyra hormone intelligence app

Your hormones have a story. Cyra reads it.

Continuous. Intelligent. Personal. The first platform that turns your hormonal data into real-time guidance for how to train, eat, and recover.

Early Access Only

Founding Member Pricing

Limited to 5,000 spots. Final Founding Member window before retail.

  • 20% off annual subscription
  • 6 months of Cyra Pro free
  • Priority device shipping
  • Fully refundable until launch + 20% Cyra coupon

Launching for Founding Members in December 2026.

FEATURED IN 50+ MEDIA PLATFORMS

Every phase. Every need.

Built for every stage of women's health

Whether you are optimizing athletic performance, planning a pregnancy, or navigating perimenopause, your hormones are the guide.

Fertility Planning

Understand your cycle and ovulation timing with continuous, data-driven insights to support your fertility decisions.

Navigating (Peri)Menopause

Understand how hormonal changes affect your body, energy, and sleep, with insights for perimenopause and menopause.

Understanding Hormonal Health

Identify hormonal patterns and changes across your cycle to better understand symptoms, balance, and overall wellbeing.

Training & Recovery

Align training, recovery, and daily movement with your cycle to optimize energy, performance, and resilience across every phase.

Fertility PlanningNavigating (Peri)MenopauseUnderstanding Hormonal HealthTraining & Recovery

Features

Built around your biology

From ovulation prediction to training load, daily fueling, and long-term hormonal longevity, every feature is powered by your data.

Cycle PredictionsPerformance ZoneHormone TrackingDaily InsightsHealth Sharing

Cycle Predictions

Predict your period, ovulation, and fertile window with accuracy that improves each cycle as Cyra learns your unique biology.

Performance Zone

Align your workouts and recovery days with your hormonal cycle phases so your training works with your body, not against it.

Hormone Tracking

Visualize your estrogen, progesterone, and LH levels in real time, updated continuously throughout your cycle on your device.

Daily Insights

Get personalized daily guidance on energy, sleep, nutrition, and focus based on exactly where you are in your hormonal cycle.

Health Sharing

Share your hormone trends and cycle summaries with your partner or healthcare provider for more informed support and care.

Cycle Predictions

Predict your period, ovulation, and fertile window with accuracy that improves each cycle as Cyra learns your unique biology.

Performance Zone

Align your workouts and recovery days with your hormonal cycle phases so your training works with your body, not against it.

Hormone Tracking

Visualize your estrogen, progesterone, and LH levels in real time, updated continuously throughout your cycle on your device.

Daily Insights

Get personalized daily guidance on energy, sleep, nutrition, and focus based on exactly where you are in your hormonal cycle.

Health Sharing

Share your hormone trends and cycle summaries with your partner or healthcare provider for more informed support and care.

Cycle Predictions

Predict your period, ovulation, and fertile window with accuracy that improves each cycle as Cyra learns your unique biology.

Performance Zone

Align your workouts and recovery days with your hormonal cycle phases so your training works with your body, not against it.

Hormone Tracking

Visualize your estrogen, progesterone, and LH levels in real time, updated continuously throughout your cycle on your device.

Daily Insights

Get personalized daily guidance on energy, sleep, nutrition, and focus based on exactly where you are in your hormonal cycle.

Health Sharing

Share your hormone trends and cycle summaries with your partner or healthcare provider for more informed support and care.

Team

Expert team behind Cyra

Trusted institutions where the Cyra team brings experience and expertise from.

FAQ

Frequently Asked Questions

What is Cyra?
Cyra is a hormone intelligence platform for women. It tracks your estrogen, progesterone, LH, and FSH levels continuously and noninvasively through a wearable sensor paired with an app on iOS and Android. Cyra translates your hormonal data into personalized daily guidance for cycle tracking, nutrition, fitness, sleep, reproductive health, and long-term hormonal longevity.
How does Cyra track hormones without a blood draw?
Hormones produce measurable physiological effects across your body, continuously. Progesterone raises your body temperature, shifts your heart rate, and alters your sleep architecture. Estrogen changes vascular tone and skin conductance. Cyra's proprietary sensor array captures these biomarkers 24/7, and our ML models, trained on clinical-grade data, reconstruct your hormone curves in real time.
How is Cyra different from Oura, Whoop, or Apple Watch?
Oura, Whoop, and Apple Watch are fitness and recovery platforms. Their algorithms treat the hormonal variations in your biometric data as noise to be filtered out. A woman's HRV dropping 12% in her luteal phase is not a recovery problem; it is progesterone doing its job. Cyra is the first hormone intelligence platform built from the ground up to decode these signals, not suppress them. It is not a wearable tracker repurposed for women. It is purpose-built hormone intelligence.
What hormones can Cyra detect?
At launch Cyra will track estrogen (E2), progesterone (P4), LH, and FSH: the four hormones most critical to menstrual cycles, fertility, and menopausal transitions. Our roadmap includes cortisol, testosterone, and thyroid markers as we expand the sensor suite.
How accurate is Cyra compared to a blood test?
Our clinical validation targets a correlation of r ≥ 0.90 against gold-standard immunoassays for each hormone. Early bench results exceed this for progesterone and estrogen. We'll publish full clinical data as trials conclude.