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Find answers to common topics people ask us about.

Device compatibility

The Oura ring is compatible with most mobile devices that run iOS 10.0 or later, or Android 6.0 or later. An up-to-date list of tested devices can be found here.

The Oura app for iPhone is available on the App Store for devices running iOS 10.0 or later. The Oura app for Android is available on Google Play for devices running Android 6.0 or later.

Feature FAQs

Oura measures your resting heart rate during sleep and rest by detecting changes in your Blood Pulse Volume (PPG). The measurements are done from the arteries on the palm side of your finger using two infrared LEDs.

No, Oura doesn’t track heart rate during exercise or other activities. The ring tracks your resting heart rate while you sleep, and during restful moments during the day.

You can, but to protect your finger and your ring, we don’t recommend it. Like regular jewelry, Oura can scratch if worn while lifting weights or gripping bars, or when scraping against metal, ceramics or stone.

Oura tracks your heart rate variability (HRV) while you sleep, and during restful moments during the day. It calculates your HRV from the rMSSD, a well-known HRV parameter that provides a good view on your Autonomic Nervous System activity.

On-demand resting heart rate and heart rate variability tracking for rest and breathing exercises is planned to be released in early 2019.

Learn more.

Oura registers your body temperature reading every minute while you sleep. The Oura app doesn’t show absolute temperature values in Fahrenheit or Celsius, instead it shows how your body temperature changes around your own personal baseline over days, weeks and months.

Learn more.

Yes, if you prefer to keep Bluetooth off completely, you can enable ring airplane mode to cut all radio transmission from the ring.

Oura uses Bluetooth to sync your ring’s data with the app and to send notifications, but it doesn’t need to be connected to your phone to collect data. The ring can store data for up to 6 weeks. Just take your ring out of airplane mode and it will begin syncing all your stored data.

Learn more

The Oura ring is a Bluetooth Smart class 2 device. Bluetooth is only active on the ring for short periods of time, well below 1% of the day. Data is transmitted more continuously when the ring syncs with the app, and during firmware updates. Additionally, the Bluetooth signal and advertising are turned off when you’re inactive or sleeping.

The limit for SAR (Specific Absorption Rate) for a device such as the Oura ring is 2.0 W/kg for head and body. The Oura ring’s SAR level is 0.0003 W/kg. Learn more.

Orders & Returns

You may return your fully functional and undamaged Oura product for any reason within 30 days of receipt of your ring for a full refund. Shipping and handling charges are not refundable. For detailed instructions, please see the Returns page.

You can order a sizing kit when placing your ring order. Currently it isn’t possible to order sizing kits separately. Learn more.

If you want change the color or size of your ring, or if you need to update your shipping details, please contact our customer care team at orders@ouraring.com.

To cancel your order, please contact our customer care team at orders@ouraring.com.

Troubleshooting

If you’re experiencing issues with your device or your data, tips and troubleshooting steps can be found in our Help Center.  Solutions may also be found in the Known issues article.

Can’t find your answer here? Check out our entire Help section.

 

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National Winner Nordic Startup Awards 2017 Reddot Award 2018 Winner European Union - European Regional Development Fund leverage from the EU 2014-2020