OUR STORY
We Built the Ring
We Couldn't Find
XONYL began with a simple frustration — every health wearable on the market made you look like you were wearing one. We believed health intelligence should be invisible. So we built it into a ring.
80%
of people abandon wearables within 6 months
Most health devices fail not because of their data — but because of how they feel to wear. Bulky screens. Constant notifications. A device that announces itself before it helps you.
We studied why people stopped wearing their trackers. The answer was never the technology. It was always the design
THE ANSWER
Invisible Technology Visible Results
Titanium-built
A ring engineered from aerospace-grade titanium — worn like jewelry, built to last.
Clinical Precision
The same sensors trusted in medical research, miniaturized into 3 grams of titanium.
7 Days, One Charge
Battery life built for real life, not for charging cables on your nightstand every morning.
THE SCIENCE BEHIND IT
Health Data That Actually Means Something.
Every metric XONYL tracks is grounded in peer-reviewed research connecting it to long-term health outcomes.
Heart Rate Variability
HRV is one of the strongest predictors of cardiovascular health and stress resilience. A 2022 study in Frontiers in Physiology found that consistent HRV tracking significantly improved recovery outcomes in both endurance athletes and sedentary adults alike.
Sleep Quality
The NIH estimates 1 in 3 adults are chronically sleep-deprived. Research published in Nature consistently links poor sleep to increased risk of diabetes, obesity, cardiovascular disease, and cognitive decline. XONYL tracks all 4 sleep stages continuously.
Blood Oxygen (SpO2)
SpO2 levels below 95% during sleep are a clinical indicator of sleep-disordered breathing. The American Sleep Association links chronic low SpO2 to hypertension and increased cardiac risk. XONYL monitors SpO2 passively, every night.
Skin Temperature
Body temperature fluctuations of as little as 0.2°C can signal early illness, hormonal shifts, and recovery status. Stanford research (2020) identified continuous temperature monitoring as one of the most accurate early indicators of illness onset — up to 2 days before symptoms appear.
WHAT WE STAND FOR
Three Principles. One Ring
Invisible by Design
We believe the best technology disappears into your life. XONYL was engineered to be worn everywhere, noticed nowhere, and trusted completely.
Honest Data
No gamification. No arbitrary scores. Just accurate, clinically-grounded health data delivered clearly — so you can make real decisions about your real life.
Built to Last
Aerospace-grade titanium. IP67. A ring that survives your life as seriously as it tracks it. We don't believe in planned obsolescence.
YOUR HEALTH STARTS HERE
Worn by thousands. Trusted every night
Join the growing number of people who've stopped guessing and started knowing
Free shipping · 30-day returns · 1-year warranty