At just 24, Dustin Freckleton suffered a stroke during his first year of medical school. The experience left him temporarily paralyzed on one side of his body and searching for answers about his own health. Eventually, he would learn that Sleep Apnea played a significant role in his condition.

Nearly seven years later, Freckleton was diagnosed with sleep apnea, a condition in which breathing repeatedly becomes blocked during sleep and is associated with an increased risk of stroke. He also says he was diagnosed with atrial fibrillation, an irregular heart rhythm.

Those experiences ultimately led him to launch Happy Health, a healthcare technology company developing an AI-powered smart ring designed to help physicians identify and diagnose sleep apnea in a matter of days.

The company emerged from stealth after raising $75 million across multiple funding rounds since 2019. Investors include ARCH Venture Partners and OpenLoop, both of which have continued backing the company as it progressed through manufacturing, clinical validation, and U.S. Food and Drug Administration clearance for its smart ring.

The most recent funding tranche closed in 2025. Freckleton says tens of thousands of people have used Happy’s platform, although the company has not disclosed its valuation or revenue.

More Than a Smart Ring

Happy’s technology goes beyond simply tracking sleep.

The company’s ring collects biometric data while users sleep and uses artificial intelligence to analyze that information for signs of sleep apnea. The platform then connects patients with physicians through Happy’s healthcare network.

Following testing, patients can consult with a physician who can diagnose sleep apnea and, when appropriate, prescribe treatments such as CPAP machines or dental devices.

That combination of wearable technology and healthcare services is central to Happy’s strategy.

As Freckleton puts it: “If you want to track your bad sleep, go to Oura. If you want to fix your bad sleep, come to Happy.”

Patients can purchase the system directly online or receive a referral from a physician. The company says its $396 price includes the ring, one year of sleep tracking, and physician consultations. Freckleton also says the system is often covered by insurance.

A Broader Vision for Health Monitoring

Sleep apnea is only the beginning of Happy Health’s ambitions.

Freckleton believes the company’s wearable technology could eventually be used to monitor and identify other health conditions. The company chose sleep apnea as its starting point because the disorder frequently goes undiagnosed and is associated with serious long-term conditions, including heart disease and diabetes.

Happy Health’s approach reflects a broader shift in healthcare: wearable devices are moving beyond fitness tracking toward continuous health monitoring, clinical testing, and potentially earlier diagnosis.

For Freckleton, that mission is personal. What began with a stroke at 24 has evolved into a company betting that smart wearable technology and artificial intelligence can help people understand—and ultimately improve—their health.

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