Hormonal Intelligence made wearable.
Real-time hormone tracking,
for health and fertility insights you can trust.
Real-time. Non-invasive. Out of sight.
Phira is a smart earring-back designed to track estrogen, progesterone, and LH shifts. Cycle after cycle.
Hormones
The Drivers of Your Health and Fertility
From daily energy levels to reproductive goals and long-term metabolic health, hormones influence how you feel each day and your lifelong wellness. Daily urine testing or predictions built on old cycle data fall short when precision, timing, and consistency truly matter.
Hormones
The Drivers of Your Health and Fertility
From daily energy levels to reproductive goals and long-term metabolic health, hormones influence how you feel each day and your lifelong wellness. Daily urine testing or predictions built on old cycle data fall short when precision, timing, and consistency truly matter.
Your body signals every shift.
Your body signals every shift.
We just found a better way to listen
We just found a better way to listen.
The skin just behind the ear is directly above a highly vascular region, capturing subtle vascular and thermoregulatory shifts correlated to estrogen, progesterone, LH, sleep, exercise and nutrition while remaining less affected by motion or environmental temperature than the wrist or fingers.
Less noise. Fewer artifacts. More meaningful data.
Less noise. Fewer artifacts. More meaningful data.
Your body signals every shift.
Your body signals every shift.
We just found a better way to listen
We just found a better way to listen.
The skin just behind the ear is directly above a highly vascular region, capturing subtle vascular and thermoregulatory shifts correlated to estrogen, progesterone, LH, sleep, exercise and nutrition while remaining less affected by motion or environmental temperature than the wrist or fingers.
Less noise. Fewer artifacts. More meaningful data.
Designed to disappear.
Mirie turns your favorite earrings into a clinical-grade lab.
Designed to disappear.
Phira turns your favorite earrings into a clinical-grade lab.
One Device, Multiple Goals.
1
Conception
Kairie spots high fertility earlier than LH tests, giving you a longer, more accurate window to conceive. Plan your pregnancy in a simple, non-invasive manner.
2
Contraception
Know exactly when to use protection with real‑time detection of your earliest fertility signals, giving you confidence to avoid pregnancy naturally.
3
Hormonal Health
By tracking your hormonal cycle and daily routines, we flag irregularities and deliver guidance to help restore balance before small issues become long‑term obstacles.
1
Conception
Phira spots high fertility earlier than LH tests, giving you a longer and more accurate window to conceive. Plan your pregnancy in a simple, non-invasive manner.
2
Contraception
Know exactly when to use protection with real‑time detection of your earliest fertility signals, giving you confidence to avoid pregnancy naturally.
3
Hormonal Health
By tracking your hormonal cycle and daily routines, we flag irregularities and deliver guidance to help restore balance before small issues become long‑term obstacles.
Closer to the source. Closer to the truth.
Replace guesswork with real-time tracking
Built for real women
Powered by live data, not averages or perfect 28-day models. Mirie remains accurate even if your cycle shifts.
Precise Timing
Most trackers estimate fertile days and confirm them later. Phira identifies fertile days in real-time – game-changing for trying to trying to conceive or avoid pregnancy.
Deep Hormone Insights
Understand how your estrogen, progesterone and LH rise and fall across each cycle, without daily urine tests or strips.
See the research that started it all.
Built on rigorous science and grounded in clinical data, Phira was developed over months of continuous study on real women and validated against gold-standard clinical measures. Explore the foundational studies and the clinical literature behind our platform.
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