Wearables use AI and temp dips to reveal cycle timing

Oura is widely cited as a pioneer in integrating hormonal health into wearable data. Its approach goes beyond predicting next period by tying long-term biometric trends to a specific hormone-related question: how do symptoms affect quality of life and daily functioning? With Menopause Insights, Oura combines questionnaire responses with temperature and other data to explain symptom patterns over time. It also supports an AI-powered advisor to help interpret your cycle data.

Ultrahuman’s Ring Air and Ring Pro collect temperature data to map your cycle, and it offers a paid Cycle & Ovulation Pro PowerPlug that aims to confirm ovulation with more than 90% accuracy. The Pro leverages a medical-grade algorithm from viO HealthTech, adapted from years of data. It’s designed for people who don’t fit a textbook 28-day cycle, including those with conditions like PCOS or endometriosis. It’s important to note that Ultrahuman’s Pro is a wellness tool, not a medical device, and it isn’t FDA-cleared for contraception.

Whoop leans into its lab-tested vibe, offering Hormonal Symptom Insights and Predictions that tailor cycle forecasts to you as they learn. Its Women’s Health panel expands to include 81 biomarkers, tested at Quest Diagnostics, though some testing and features are US-only. The model grows with your data, accounting for irregular cycles, perimenopause and hormonal birth control in its forecasts.

Apple’s Cycle Tracking in the Health app logs periods, symptoms, spotting and basal body temperature, then projects a future period window. It’s a more cautious approach compared with ring-based wearables but benefits from smooth integration with iPhone health data, which many people already use daily.

For most people, these wearables offer a more nuanced view of hormonal health without extra gadgets. If you already wear a ring or a smartwatch, you can start seeing trends like how your cycle aligns with sleep quality, heart rate variability or energy levels. The tools are meant to inform you and guide conversations with healthcare professionals, not replace medical advice. Some features require a subscription or aren’t available outside the US yet, and not all components are FDA-cleared or intended for contraception.

The trend is clear: more brands are building AI-assisted, hormone-aware capabilities into wearables, with partnerships and deeper data modeling expanding the options. If you’re curious about trying these tools, check whether your current wearable supports cycle tracking and whether you’re comfortable with any optional paid features. Always bring any unusual symptoms to your clinician, especially if you’re dealing with conditions like PCOS or perimenopause.