The Wearable Designed Just for Women

Built With Doctors

Most wearables are designed for men. We designed Petal specifically for you — a soft insert, worn in your bra — right over your heart.

Safety, Not an Afterthought

  • No Wi-Fi or cellular
  • Uses ~0.07% of the wireless energy of music earbuds
  • Uses low-power Bluetooth in short bursts, not continuously
  • OEKO-TEX® STANDARD 100 materials, tested for 1,000+ harmful substances

If you'd like to learn more about Petal's commitment to safety, you can read more here.

The Science

Insight you've never had before.

Visceral Fat

See the fat your scale can't. Not all fat is the same, and the kind that sits around your organs quietly shapes your energy and inflammation. Petal shows you what an average scale never could.

Mobility & Balance

Catch the shift, years before you'd feel it. Strength gets the spotlight, but it's balance and mobility that let you keep doing what you love, for longer. Both shift slowly with age and Petal helps you keep an eye on the shifts.

Heart Health

Your heart rate has been trying to tell you something. Your heart rate moves with your hormones, your stress, your cycle. Petal reads the pattern directly, so you stop wondering if what you're feeling is real. (It is.)

Activity

Your energy isn't a flat line. It rises and falls with sleep, cycle, and training. Petal shows how much you move and how hard, so you know when to push and when to back off.

Who's Behind the Science

Built with doctors who see what goes wrong when women aren't studied.

Dr. Tamara Rajaram, MD, MBA

Physician & Health Strategy — Shapes how Petal translates raw sensor data into insight a woman can actually act on.

Dr. Nicolas Prionas, MD

UCSF Breast Cancer Specialist — Reviewed Petal specifically for safety of long-term wear against breast tissue.

Dr. Vasant Salgaonkar, PhD

Cardiology — Guides how Petal's heart-rate pattern readings are interpreted across stress, recovery, and hormonal shifts.

Get Petal

$199. One size, 12 months of Petal Wellness included.

Available on iOS today; Android coming Fall 2026.

Why Women Love Petal

What the press is saying

Covered for Comfort and Accuracy, Not Just Novelty

I tried it on at CES and found it extremely comfortable, even more so than a smartwatch or smart ring.

— Angela, PC MAG  

Because wearers position the insert right next to the heart, the device can capture more accurate readings than your typical smartwatch.

— Nina, ZDNET

I found it very comfortable, and it’s easy to forget you’re even wearing it.

— Rena, Everyday Health

Unlike other wearables that rely on light-based sensors or indirect basal temperature readings, Petal uses medical-grade bio-impedance and electrical measurements to deliver insights on the heart, mind, body and cycle.

— Athletech News

Designed for comfort and discretion, it [Petal] brings preventive monitoring into daily life.

— Glanze, Medical Daily

Why Petal exists

One organ has always held a deeper story of a woman’s health. We built Petal to listen.

Women wait longer for diagnoses. Their symptoms are dismissed more often. And much of the research behind modern health technology wasn’t built around women.

From the first prototype, Petal was designed around a woman’s chest, cycle, and physiology—so the data reflects her body and her baseline, not someone else’s average.

And with her permission, every woman who wears Petal can help build a better understanding of women’s health.

Looking Ahead

Petal is built for what comes next.

Today, Petal tracks heart patterns, visceral fat, mobility, and activity.

The team is also researching future clinical applications, including changes in breast tissue over time.

Any diagnostic capability would require clinical validation and regulatory clearance.

Know Your Body Better

Build a personal baseline from your own body — and help improve what we know about women's health

Questions Worth Asking

Yes. Petal emits no ionizing radiation and has no Wi-Fi or cellular radios — it reads your body the way a Bluetooth earbud reads sound: low-power, short-range, external. It has been designed and reviewed alongside leading oncologist and cardiologists specifically for everyday, long-term wear.

No. Petal connects only over Bluetooth Low Energy to your phone. It has no Wi-Fi or cellular radio. And unlike streaming audio that keeps the radio active, Petal sleeps >99% of the time, gathering sensor data passively and waking up only for micro-second bursts to sync readings.

No — Petal is a wellness device intended for tracking and insight, not for diagnosis or treatment of any condition.

Yes. Petal is a thin, one-size insert worn between the breast and garment, with direct skin contact required to take a reading.

  • Every Petal ships with 12 months of Petal Wellness included — the app and physician-reviewed insights on your readings.