Smart Rings & Watches for Cycle Tracking 2025 – A Complete Guide
- allthingsdaysie
- Sep 17
- 3 min read
In Germany and worldwide, wearable technology is transforming the way we approach health. Beyond fitness and sleep, many smartwatches and rings now offer menstrual cycle tracking features. These devices help users predict their periods more accurately, understand their fertility windows, and recognize hormonal changes that impact mood, energy, and overall well-being.
How Do Wearables Track Your Cycle?
Traditional apps rely on manual input. Modern wearables use continuous biometric data, such as:
Skin temperature – small changes can indicate ovulation.
Resting heart rate – increases during the luteal phase.
Breathing rate and sleep quality – reflect hormonal shifts.
Activity and recovery levels – energy varies across phases.
By combining these signals, wearables often provide more precise and personalized predictions than calendar apps alone.
Popular Devices to Explore in 2025
The Oura Ring is among the best-known smart rings on the market. Originally designed for sleep and recovery tracking, it now includes cycle prediction features. Its temperature sensors detect subtle nightly shifts linked to ovulation and menstrual phases. Through the Oura app, users get insights into fertile windows and upcoming periods. For anyone seeking a stylish, discreet wearable that blends wellness with cycle tracking, Oura is a premium choice.
2. Ava Bracelet 🔗: Fertility and Cycle Health at Night
The Ava Bracelet was created specifically for women’s health and fertility tracking. Worn overnight, it measures multiple parameters like pulse, skin temperature, breathing, and heart rate variability (HRV). Ava's algorithm converts these signals into valuable daily insights about fertile days, ovulation, and different cycle phases. Clinically validated, Ava is particularly helpful for women trying to conceive and anyone seeking a better understanding of their cycle.
3. Apple Watch 🔗: Seamless Integration of Period Tracking
The Apple Watch (Series 8 & newer, or Ultra) offers a built-in Cycle Tracking app. It lets users log symptoms like cramps, spotting, or mood changes. When worn overnight, it uses wrist temperature sensors (along with heart rate data) to help improve predictions and provide retrospective ovulation estimates.
Note: it’s still an estimation tool, not a medical device.
4. Fitbit Sense & Versa 🔗: Affordable All-Rounders with Period Logging
The Sense and Versa models by Fitbit are budget-friendly smartwatches with a wide range of features: cycle tracking, sleep analysis, stress management, and fitness monitoring. In the Fitbit app, users can log periods and symptoms while identifying links between cycle phases, energy, mood, and stress. For those wanting a cost-effective yet reliable wearable, Fitbit offers a solid entry option.
📊 Comparison of Smart Rings & Watches for Menstrual Cycle Tracking
Device | Key Features | Cycle Tracking Focus | Price (2025) | Best For |
Oura Ring | Ring design, sleep & recovery tracking, temperature sensors | Predicts ovulation & cycle phases | €320–€350 + subscription | Stylish, science-backed wearable |
Ava Bracelet | Worn overnight, measures pulse, temperature, breathing & HRV | Fertility-focused daily insights | €250–€280 + subscription | Women trying to conceive or seeking medical-grade tracking |
Apple Watch | Multifunction smartwatch, Cycle Tracking app, temperature & heart rate sensors | Combines manual logging with sensor data | €400–€600 | Apple users want everything in one device |
Fitbit Sense/Versa | Affordable smartwatch, stress & sleep tracking, period logging | Links cycle phases with mood, energy & activity | €200–€300 | Cost-conscious users with an overall wellness focus |
Why Wearables Alone Aren’t Enough
As smart as they are, no wearable can predict periods with 100% accuracy. Stress, travel, and lifestyle shifts all affect the cycle. That’s why it’s worth combining digital insights with practical everyday solutions.
💡 Did you know?
Wearables provide valuable predictions, but cycles can still shift unexpectedly. With allthingsdaysie period underwear, you stay protected and comfortable at all times.
Our underwear offers:
Seamless comfort – so soft and light you’ll almost forget you’re wearing it.
Reliable protection – absorbs as much as 4–6 tampons, day and night.
Safe for you & the planet – vegan, free from silver chloride and biocides.
Sustainable quality – durable, robust, and made with carefully selected materials.
And the best part: Thanks to our PermSafe™ technology, cleaning is effortless – blood washes out hygienically even without pre-wash, keeping your underwear fresh and odor-free without hot washing.
So you’re prepared around the clock — no matter how your cycle unfolds.
Pairing Tech with Comfort
Wearables provide the prediction, while sustainable period products provide the protection. Together, they make menstrual care easier, more reliable, and eco-friendly — perfectly aligned with Germany’s growing interest in FemTech and sustainable living. ♻️
✨ Discover allthingsdaysie period underwear – your all-round solution for comfort, protection, and peace of mind 🌸