Ultrahuman has announced the launch of its Cycle & Ovulation PowerPlug, a new fertility tracking feature available at no cost to Ring AIR users. The technology integrates multiple biomarkers including skin temperature, resting heart rate, and heart rate variability to track ovulation.
“Most fertility tracking today is either inconvenient, expensive, or both. Women often have to use two apps, pay for two subscriptions, and even purchase separate devices just to track their fertility,” said Mohit Kumar, Founder and CEO of Ultrahuman. “We’re changing that. Ultrahuman’s fertility tracking is built natively into the same Ring AIR that already tracks your health, and we’re offering this service completely free. There’s no pink tax here—just evidence-backed insights to help women make informed decisions about their reproductive health.”
The launch follows significant growth for Ultrahuman, with market share increasing from 10% to 30% by November 2024. The company developed its algorithm after studying 41,475 anonymized cycles and incorporates multiple stratifiers including age, BMI, skin perfusion, and diurnal stress.
“This is crucial because a single marker can vary, but the combined output of multiple markers reduces drift and boosts accuracy. This has been fundamental to advanced clinical biomarker testing and has inspired us to integrate a similar multi-marker system into our wearable technology. By capturing a range of fertility signals, we provide a far more accurate and comprehensive picture than methods relying on just one factor,” says Aditi Bhattacharya, Scientific Director at Ultrahuman.
The new feature is part of Ultrahuman’s PowerPlugs platform, which builds individual apps and plugins on top of the company’s health and wellness data stack.
