The new Cycle & Ovulation Pro feature claims over 90% accuracy for ovulation confirmation, adapting viO’s Class II medical device technology for consumer wellness tracking. The feature targets women with diverse cycle patterns, including those with PCOS, endometriosis, or thyroid disorders who often receive inaccurate tracking from traditional menstrual apps.
Wearable technology company Ultrahuman has acquired viO HealthTech and launched Cycle & Ovulation Pro for its Ultrahuman Ring AIR device. The acquisition brings viO’s OvuSense technology, developed over 15 years with validation in 13 peer-reviewed clinical publications, to Ultrahuman’s consumer wellness platform.
viO HealthTech developed the OvuSense algorithm using data from over 260,000 cycles collected with medical-grade sensors. The original OvuSense product holds FDA clearance (510(k) K122337) for intravaginal temperature-based ovulation tracking and CE Class IIa medical device certification in the UK, EU, Canada, and Australia.
The adapted algorithm for Ultrahuman Ring AIR uses finger-based temperature sensing rather than intravaginal monitoring, positioning it for general wellness rather than medical diagnosis. The technology addresses the reality that most women don’t have regular 28-day cycles, with the system designed to work reliably for 87% of women with non-standard cycle patterns.
“This collaboration benefits from 15 years of clinically proven women’s health expertise and applies it to the world’s lightest smart ring. For the first time, best-in-class hardware, software, and algorithms with a clinical background come together in one wellness device. Our mission is to give women cutting-edge tools to optimise their health, combining clinical technology with comfort and style to deliver the most accurate women’s health tool available,” said Mohit Kumar, CEO of Ultrahuman.
The Cycle & Ovulation Pro feature includes Cycle Flags that identify patterns like early or late ovulation, short luteal phase, or absence of ovulation. It also offers symptom and lifestyle tagging to help users identify personal wellness trends.
The feature is available for $3.99 monthly or $39.99 annually in the USA, UK, EU, Australia, and Canada, with other regions planned for future rollout. Ultrahuman’s basic cycle tracking remains free for Ring AIR users.
“Wearables will shape the future of health. We’re delighted to be able to bring OvuSense women’s health insights to a significantly wider audience via the Ultrahuman Ring AIR,” said Rob Milnes, CEO of viO HealthTech.
