The Symptom Radar feature detects early signs of strain on your body, and alerts you so that you can take proactive steps toward rest and recovery.
Symptom Radar is available for:
- Gen3 or later with active membership
- iOS
- Android
This feature is not available on Gen2 or older.
An updated version of Symptom Radar is rolling out gradually starting June 16, 2026, for members in the US, India, and the UAE, and in English only. These members will find Symptom Radar in Health Radar. If you're in another region, Symptom Radar remains available as a standalone feature in the menu.
What Is Symptom Radar?
How to Use Symptom Radar
Troubleshooting
Things to Keep in Mind
More Information
What Is Symptom Radar?
Symptom Radar looks for changes in your Oura data that may indicate something is putting a strain on your body. The Oura App monitors several biometrics including average body temperature, respiratory rate, resting heart rate, heart rate variability, and inactive time—significant deviations in one or more of these metrics may be a sign for you to focus on rest and recovery in the upcoming days.
Symptom Radar also uses demographic information such as your age, sex assigned at birth, height, and weight to better tailor its recommendations to you. To ensure your information is correct, tap the menu in the upper-left corner of the Today tab and select My profile.
Oura Ring is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Please do not make any changes to your medication, nutrition, or workouts without first consulting your doctor or another medical professional.
How to Use Symptom Radar
Symptom Radar is turned on by default and visible to Oura members with active membership. Among other inputs, the feature uses your sleep data to check for signs of strain on your body. If there is a clear sign of strain, it will be spotlighted on the Today screen the following morning. In that case, you can tap on the Symptom Radar card to see more detail.
You need at least seven nights of sleep data within the past 14 days.
You can also access Symptom Radar at any time by selecting the menu in the upper-left of the Today tab and then selecting Symptom Radar.
The Oura App displays signs of strain in a three-level estimate:
- No signs: There are no obvious signs in your biometrics of something straining your body
- Minor signs: There are small signs in your biometrics of something straining your body
- Major signs: There are stronger signs in your biometrics of something straining your body
If there are minor or major signs of strain, the Oura App will recommend focusing on rest and recovery and will display the biometrics that are showing the most change. If needed, you can enable Rest Mode, which pauses your Activity Score, goal, and all activity contributors. Symptom Radar will continue to monitor your metrics even with Rest Mode activated.
Symptom Radar can be toggled on or off at any time from the detail screen.
Troubleshooting
If you see Calibrating or Missing Sleep Data:
- Keep wearing your ring at night to help the feature gather enough data. Symptom Radar requires at least seven nights of sleep data from the past 14 days (including last night) to display a reading.
If you see Insufficient Sleep Data:
- This means your ring was worn, but something disrupted the data collection. Your ring might have been too loose, or your sleeping position may have restricted blood flow (like if your arm went numb). Try wearing your ring on a different finger for a snugger fit and adjusting your sleep position to support better data collection
If you see Calculating for an extended period:
- Double-check that your profile details are complete and accurate. To review your details, go to the
menu and select My Profile
If you see Symptom Radar is off:
- You can turn the feature on manually
- Tap the
- Select Symptom Radar
- Toggle the Symptom Radar to on
- Tap the
Things to Keep in Mind
- Symptom Radar looks for early signs of common respiratory illnesses—like a cold or the flu—based on changes in your biometric data. While it’s designed to give you a heads-up before symptoms appear, it’s not always perfect. You may receive a warning even if you feel fine or feel unwell without seeing a warning. Everyone's body responds differently to strain or illness. If you're unsure, trust how you feel, and use Rest Mode when you need it
- Readiness and Symptom Radar use some of the same data, but they serve different purposes, so their results won’t always match. Sometimes, Symptom Radar may show a change before your Readiness Score decreases
- Symptom Radar may not work optimally with pre-existing medical conditions
- Pregnancy also impacts biometric baselines and may reduce the accuracy of Symptom Radar
- Symptom Radar may not work optimally with pre-existing medical conditions
