Finally, a ring that understands
the female body.
Onora tracks body temperature, HRV, and sleep to reveal what's happening inside you every night, every cycle. No monthly fee. Forever.
Your body changes every day.
But no one taught you how to read it.
From your first cycle to menopause, your hormones, temperature and sleep are constantly shifting. Most women just cope. Onora changes that.
Track your phases, hormones and patterns to finally understand your body's natural rhythm.
Know your fertile window precisely. Onora reads your temperature and HRV to map your cycle.
Understand every shift in your body. Hot flashes, sleep changes, temperature patterns, all tracked.
Worn at night.
Understood by morning.
Onora tracks your body while you sleep and translates everything into clear insights about your cycle, fertility and hormones.
finally made clear
Tracks your basal body temperature nightly to detect cycle phases and ovulation with precision.
Monitors your resting heart rate to identify patterns linked to your hormonal cycle.
Heart rate variability reveals your stress levels, recovery and hormonal balance throughout your cycle.
Tracks deep, light and REM sleep because your sleep patterns change with every phase of your cycle.
Oxygen saturation monitoring to ensure your body is recovering and functioning at its best.
Detects stress levels based on HRV data so you can understand how your cycle affects your mind.
Tracks your basal body temperature nightly to detect cycle phases and ovulation with precision.
Monitors your resting heart rate to identify patterns linked to your hormonal cycle.
Heart rate variability reveals your stress levels, recovery and hormonal balance throughout your cycle.
Tracks deep, light and REM sleep because your sleep patterns change with every phase of your cycle.
Oxygen saturation monitoring to ensure your body is recovering and functioning at its best.
Detects stress levels based on HRV data so you can understand how your cycle affects your mind.
They finally understood their bodies.
7,000+ women are already tracking their health with Onora every night.
"I always felt like my body was a mystery. With Onora I finally understood why I felt exhausted every month at the same time. It changed how I take care of myself completely."
"We had been trying for over a year. Onora helped me identify my exact fertile window and within two months everything changed. I cannot recommend it enough."
"I thought the hot flashes and poor sleep were just something I had to accept. Onora showed me patterns I never noticed and helped me have real conversations with my doctor."
Everything you need
to know.
Onora measures your basal body temperature every night while you sleep. Temperature shifts throughout your cycle are detected automatically and mapped in the app, showing your phases, fertile window and predicted period.
No. Onora is a one-time purchase. You get full access to all app features forever, with no recurring fees.
We recommend the index or middle finger of your non-dominant hand for the most accurate readings.
Yes. Onora is IP68 rated, meaning it is fully waterproof. You can wear it in the shower, bath or pool.
Up to 7 days on a single charge. The included charging case makes it easy to top up.
Yes. Onora is safe to wear during pregnancy. It tracks sleep quality, heart rate and temperature changes that are especially useful during this phase.
Apps rely on data you manually enter. Onora reads your body directly every night, making predictions far more accurate and personalized.
Onora comes in sizes 6 through 12. We recommend using our sizing guide before ordering to ensure the best fit and most accurate readings.
Not just another tracker.
Most devices collect data. Onora understands your body as a woman.
| Feature | Onora | App only | Fitness band | Nothing |
|---|---|---|---|---|
| BBT tracking | ✓ | ✗ | ✗ | ✗ |
| Overnight HRV | ✓ | ✗ | ~ | ✗ |
| Cycle prediction | ✓ | ~ | ✗ | ✗ |
| Fertility window | ✓ | ~ | ✗ | ✗ |
| Sleep tracking | ✓ | ✗ | ~ | ✗ |
| SpO2 monitoring | ✓ | ✗ | ~ | ✗ |
| Worn while sleeping | ✓ | ✗ | ~ | ✓ |
| No monthly fee | ✓ | ✗ | ✗ | ✓ |
| IP68 waterproof | ✓ | ✗ | ~ | ✗ |
| 7-day battery | ✓ | ✗ | ✗ | ✗ |
Your body has been
waiting for this.
Slip it on tonight. Wake up tomorrow with answers you have never had before.