FAQs

Learn how Petal works, what to expect, and find answers about safety, usage, privacy, and membership.

How Petal works

Petal uses eight low-power bio-impedance (BIA) sensors- the same gentle, safe technology found in high-end smart scales.
The sensors read your body's natural electrical signals to understand what's happening beneath the surface. They're non-intrusive, emit no ionizing radiation, and are safe for everyday wear.
Because Petal sits close to your heart and chest, it captures readings right at the source - not from a distant spot like your finger or wrist.

Petal is a wearable designed around women's bodies.
Petal's unique form factor is comfortable and fully discreet, invisible to everyone but you.
Petal measures close to your heart and chest, right at the source, rather than at a distant extremity like a finger or wrist.

No. We recommend wearing Petal while you're awake- for most women, that's the time of day they already wear a bra.

No. Petal is a wellness device designed to help you understand your body- it is not a medical device, and it does not replace emergency medical care or advice from a healthcare professional.
This product is not intended to diagnose, treat, cure, or prevent any disease.

No. Petal has no Wi-Fi or cellular radios. It uses only low-power sensing technology and safely uses Bluetooth® Low Energy to communicate with the Petal Wellness™ mobile app, and it emits no ionizing radiation.

Yes. Petal uses Bluetooth® Low Energy (LE)- the same trusted, very low-power wireless standard found in everyday devices like headphones and fitness trackers.
Petal operates at a fraction of the power level of a typical smartwatch.

Petal is designed for comfort using premium, skin-friendly materials. Its soft European-knit fabrics and polyurethane-coated interiors meet the OEKO-TEX® Standard 100, meaning they have been tested for harmful substances and are considered safe for prolonged skin contact.

If you have a sensitivity to plastics, please note that Petal does include plastics that may come in contact with your skin.

Yes. Follow the below steps if you have sensitive skin:
Keep Petal clean by wiping it with a skin-safe antibacterial wipe as needed.
Keep Petal dry by patting it down with a soft cloth after workouts or heavy sweating.
Wear Petal a maximum of 6 hours per day with first wear.
If any skin sensitivity occurs, stop wearing Petal and contact a healthcare professional.

The sensors need good contact with your skin, so pair Petal with any close-fitting support garment- a bra, bralette, sports bra, or a top with a built-in bra.
Whatever you choose, a snugger fit means better readings.

No. While Petal is safe to wear, we don't recommend it during pregnancy or breastfeeding.
Your body naturally changes during this time, and those changes in breast tissue can make sensor readings inaccurate.

No. Petal is not recommended if you have an implanted cardiac device, such as a pacemaker or ICD.
If you're unsure, check with your doctor before using Petal.

Yes. Your heart and activity metrics will work just fine. Body composition readings, however, may be less accurate.

Clothing: Petal works with whatever close-fitting style you prefer- a bra, bralette, sports bra, or a top with a built-in bra. The insert is designed to rest directly against your skin, held in place by the garment.

Orientation: align the bottom curve of the device with the bottom curve of your cup. The pointed tip should point up toward your shoulder, in line with the strap.

No. Petal's sensors need direct contact with your skin, so wear it between your breast and your garment.
Placing it inside a fabric pocket will block the sensors.

All day
Petal is meant to be part of your daily routine. Put it on in the morning and take it off at night, it's not needed while you're sleeping.
Consistent wear helps Petal learn your body's natural rhythms, spot long-term trends, and offer more personalized insights.

Replacement charging cables will be available for purchase on our website shortly after Petal begins to ship.
If you have any issues please reach out to support in the space provided below ↓ or reach out to help@petal.com

You own your data.
You have complete control over your data, and Petal never sells or shares your information with third parties without your consent.

Only with your consent.
If you opt in, Petal uses anonymized, de-identified data to support our own research that advances the understanding of women's health and wellness.
You can opt out of contributing further anonymized data at any time in your account settings.
If you need help reach out to us in the space provided below ↓, or contact support at help@petal.today

Yes. A Petal Wellness™ membership is required to unlock your insights in the app. Right now, a 12-month membership is included with your Petal purchase.
Download the app here →

From time to time we offer bundle deals, so check your purchase details to see what's included with your order.

Instructions are included in the Quick Start Guide in the box with your Petal.
The Petal Wellness™ mobile app is compatible with iOS, and Android support is coming soon.
Download the app here →

We recommend keeping your phone nearby while wearing Petal so it can stay connected to the Petal Wellness™ app and keep your data and insights up to date.

If you do not find the answer to your question in our FAQs, you can send us a message by filling out the form below.