Choose the right
wearable for you
Natural Cycles is powered by temperature, and the NC°
app is equally effective with all compatible wearables.
One app, more ways than ever to measure
NC° Band
No screen, no flashes, no beeps — just comfort-first measuring that’s cost-friendly.
Oura Ring
Premium, multipurpose wearable let’s you track broader health metrics beyond fertility like sleep, stress, and activity.
Garmin Watch
Advanced training metrics, plus fitness and recovery tracking, all in one stylish design.
Apple Watch
Tracks broader health metrics and displays your daily fertility status right on your wrist.
No
One app, more ways than ever to measure
NC° Band
No screen, no flashes, no beeps — just comfort-first measuring that’s cost-friendly.
Oura Ring
Premium, multipurpose wearable let’s you track broader health metrics beyond fertility like sleep, stress, and activity.
Garmin Watch
Advanced training metrics, plus fitness and recovery tracking, all in one stylish design.
Apple Watch
Tracks broader health metrics and displays your daily fertility status right on your wrist.
The science behind NC° Birth Control
Cyclers say it best
58k+ global rating
Ida
App Store review
With NC°’s own band, tracking temperature overnight is super easy. It's great!
NC° Band x NC°
Sam
NC° and Oura sync to give me fast, reliable results that can’t be beat.
Oura Ring x NC°
Sally
App Store review
Lifer and never going back. I am using the NC° Band right now, it's amazing.
NC° Band x NC°
Chloë
Apple Watch lets me measure without thinking about it. It’s so accurate and easy to use!
Apple Watch x NC°
Kayla
I’m obsessed with how seamless and empowering this experience is!
Oura Ring x NC°
Sofia
I could right away understand when I was ovulating and when my period was going to come.
Apple Watch x NC°
Common questions
Yes. However, we recommend only switching to a new measuring device at the start of a new cycle.
Please keep in mind that you should avoid switching measuring devices too often and you can't use two devices at the same time.
When should I measure?
Simply put your wearable on before you go to bed, and it will measure while you sleep.
If you sometimes forget to measure your temperature, it will not impact the effectiveness of Natural Cycles as birth control. That said, less temperature data will make it harder for the algorithm to identify your fertile window.
We recommend adding five temperatures per week to get the most out of the Natural Cycles app.
Natural Cycles is a registered medical device that users pay to access. An NC° subscription is designed to keep your data safe, but it also means we don’t need to profit from your data like other “free” apps do. With Natural Cycles, you control your data.
Natural Cycles is 98% effective when used as intended, and 93% with typical use.
As a regulated medical device, Natural Cycles is subject to rigorous testing and yearly audits. Our FDA clearance is based on analyses of more than 15,000 women across 180,000 cycles. We are constantly monitoring the app’s performance to ensure our Pearl Index remains stable and our effectiveness rate remains consistent. You can read more about our research, including our effectiveness studies, here.
Once you sign up for Natural Cycles you’ll be able to access your exclusive discount on a brand new Oura Ring.
Yes. If you're using a Gen3 Oura Ring or later you will also need to purchase a subscription to Oura to be able to use the integration.
After you sign up for Natural Cycles and complete your purchase, we’ll send you a discount link that directs you to your exclusive Garmin offer.
If you’re an existing Natural Cycles user, you can access the discount link on the Buy Extra Supplies page in the Natural Cycles app.
Learn more about using Garmin temperature tracking to gain Natural Cycles insights.
If you already own a model with a temperature sensor, you can get natural birth control powered by your Apple Watch. Download the Natural Cycles app to get started or learn more with our guide to using Natural Cycles with Apple Watch.