The first smart ring built exclusively for women's health and hormone tracking
Visit Evie →The Evie Ring from Movano Health stands out as the first smart ring designed explicitly for women, with a focus on cycle tracking, hormone insights, and reproductive health that goes far beyond the basic period predictions found in generic smart rings. After wearing Evie daily for six weeks across two full menstrual cycles, we were impressed by how thoughtfully the product addresses women's health needs that most wearables ignore. The ring itself is beautifully designed — a slim stainless steel band available in gold, silver, and rose gold finishes that genuinely looks like jewelry, not tech. At just 2.6mm thin and weighing 4-5 grams, it's comfortable enough to forget you're wearing it, even overnight. What makes Evie special is the software: it uses skin temperature, heart rate variability, and sleep data to provide real insights into your cycle phases, ovulation window, PMS patterns, and even potential thyroid and metabolic indicators. The app presents this information in clear, actionable language rather than overwhelming you with charts. It's not perfect — battery life comes in at 4-5 days, which is on the shorter side, and the $269 price tag plus optional $10/month premium subscription adds up. But for anyone who wants deeper insights into their body's hormonal patterns, Evie is in a class of its own in the smart ring market.
Goes way beyond basic period predictions. Evie uses continuous skin temperature, HRV, and heart rate data to identify your exact cycle phases — menstrual, follicular, ovulation, and luteal — with personalized insights about energy levels, mood, and fertility windows for each phase.
Evie was designed to look like a real piece of jewelry first, a health tracker second. The slim 2.6mm stainless steel band comes in polished gold, silver, and rose gold finishes that blend seamlessly with your other rings — no one will guess it's a smart device.
Evie's high-precision skin temperature sensor takes readings every few minutes, day and night. This data is used to pinpoint ovulation with remarkable accuracy, detect early signs of illness, and identify hormonal patterns across your cycle.
The Evie app translates complex biometric data into clear, easy-to-understand insights. Instead of just showing charts, it tells you things like "Your progesterone is rising — you might notice more fatigue this week" and suggests lifestyle adjustments accordingly.
| Material | Stainless steel with PVD coating |
|---|---|
| Thickness | 2.6mm |
| Weight | 4-5g (size-dependent) |
| Width | 7.6mm |
| Finish Options | Gold, silver, rose gold |
| Sensors | PPG optical sensor, skin temperature, SpO2, 3-axis accelerometer |
| Tracked Metrics | Cycle phases, HR, HRV, temperature, sleep, SpO2, respiratory rate, resting HR |
| Battery Life | 4-5 days |
| Charging | Magnetic USB charger, ~60 min to full |
| Water Resistance | IP68 (up to 50m) |
| Size Range | US sizes 5-11 |
| Subscription | $10/month premium tier (basic features free) |
| Price | $269 |
| Feature | Evie Ring | Oura Ring Gen 4 | Circular Ring 2 |
|---|---|---|---|
| Starting Price | $269 | $349 | $299 |
| Subscription | $10/mo premium | $5.99/mo required | None |
| Designed For | Women's health | General health | General health |
| Cycle Tracking | Best-in-class | Basic | Basic |
| Battery Life | 4-5 days | 7 days | 6 days |
| Material | Stainless steel | Titanium | Titanium |
| Temperature Tracking | Yes (continuous) | Yes | Yes |
| Best For | Women's health & cycles | Sleep & general health | Alexa & all-round value |
Evie is the only smart ring built from the ground up for women's health. While Oura and others offer basic period prediction, Evie provides deep cycle phase insights, hormone pattern analysis, ovulation detection via continuous temperature tracking, and phase-specific lifestyle recommendations. The app is also designed to be approachable and educational, not just a wall of data.
The basic Evie Ring includes free cycle tracking, sleep data, heart rate, and temperature charts. The $10/month Evie Plus tier unlocks deeper insights, personalized health recommendations, trend analysis across multiple cycles, and access to exclusive content. If you just want basic tracking, the free tier works fine. If you want the full Evie experience with actionable insights, the subscription is worth it.
Evie's continuous skin temperature tracking is quite accurate for detecting ovulation — typically within 1-2 days of actual ovulation. It works by detecting the progesterone-driven temperature shift that occurs after ovulation. Keep in mind it can only confirm ovulation after it happens, so it's better for cycle awareness than for precise fertility planning.
Technically yes, but Evie's software is designed around female hormonal cycles, so many features won't be relevant for men. The ring still tracks sleep, heart rate, HRV, and temperature for anyone, but if you're not tracking a menstrual cycle, you'll get more value from Oura Ring Gen 4 or Circular Ring 2, which are designed for general health and fitness.
The Evie Ring fills a unique and important niche in the smart ring market as the only device designed specifically for women's health. Its cycle tracking is genuinely best-in-class — the combination of continuous skin temperature monitoring, HRV analysis, and phase-specific insights provides a level of understanding that generic smart rings simply can't match. The jewelry-like design is also a major plus — it's one of the few smart rings that looks like something you'd choose to wear even without the tech inside. The tradeoffs are real: shorter battery life, a somewhat expensive premium subscription tier, and a lack of fitness features. But if you're someone who wants to understand your cycle, hormones, and reproductive health better, Evie is the best smart ring for the job in 2026.
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