Natural Cycles

Take control of your cycle — naturally. Natural Cycles helps you understand your body, track fertility, and plan (or prevent) pregnancy with science, not hormones.

Get 20% off an annual plan through the link below.

As low as $6.66 /month

Sign up for natural cycles

FAQ

How does Natural Cycles work?
Natural Cycles uses your daily temperature to detect ovulation and predict fertile days. By tracking changes in your basal body temperature — either manually or via your Oura Ring — the app identifies your cycle patterns and helps you understand when you’re fertile or not.
Is Natural Cycles accurate for birth control?
Yes — when used correctly, Natural Cycles is 93% effective with typical use and 98% effective with perfect use. It’s the first FDA-cleared, hormone-free birth control app. Consistency is key — you’ll get the best results by logging your temperature daily or connecting your Oura Ring.
Do I need an Oura Ring to use Natural Cycles?
No — you can use Natural Cycles on its own by taking your morning temperature with a compatible thermometer. But if you have an Oura Ring, the integration automatically syncs your temperature data, making tracking completely effortless.