Natural Cycles: Fertility App

Natural Cycles: Fertility App

Ovulation Tracker・FDA-cleared

30K ratings
1412 reviews
With Ads#30 in top-grossing Health & Fitness
💪 Health & Fitness
🏥 Medical
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated

Features

Natural Cycles: Fertility App screenshot #1 for iPhone
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Natural Cycles: Fertility App screenshot #10 for iPhone
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About

This app helps women track their hormonal health and fertility using body temperature data. It offers hormone-free contraception, pregnancy planning, and insights into various cycle stages. It adapts to individual cycles, even irregular ones, providing daily fertility status.

Hormone-free contraception
Ovulation tracking via temperature
Personalized cycle adaptation
Pregnancy planning and tracking
Postpartum and perimenopause modes
Mood tracking
Data protection
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What users say

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What's New in Natural Cycles

5.8.4

August 18, 2026

This update includes a few tweaks for an improved app experience.

Subscription plans

Yearly with 7 day trial

Yearly with 7 day trial

$119.991 Year
7 Days trial
How to cancel Natural Cycles subscription ⁉️

Charts

Top Grossing

This app dropped -1 position in Health & Fitness chart.

Last updated on August 28, 2026.

Top Free

This app dropped -2 positions in Health & Fitness chart.

Last updated on August 28, 2026.

Events

Read more about Use WHOOP with Natural Cycles°

Use WHOOP with Natural Cycles°

Wear WHOOP overnight, wake up to NC° insights.

Aug 4, 2026 Sep 1, 2026

Read more about Meet Sleep Insights

Meet Sleep Insights

Your cycle, your sleep — connected in one place

Jun 16, 2026 Jul 17, 2026

Read more about Natural Cycles° x Garmin

Natural Cycles° x Garmin

New integration is here.

Mar 31, 2026 May 1, 2026

User reviews

Pointless and inaccurate

Have been using this app along with oura ring for temp tracking. I have regular periods and after 6 months of use it still tells me every day is a ‘use protection’/‘red’ day, except during the days I’m actually on my period. And my periods are regular, which tells me their algorithm for prediction is just awful.
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Not for night shift workers

The NC compatible wearables only use data taken from 7p-10am. NC states you only need 4 hours of sleep which isn’t accurate, after speaking to customer support you’ll find out you need 4 hours of sleep within 7p-10am. If you get home from work at 7am like I do your data wont be taken even if sleeping 8 hours straight. This information needs to be stated up front so shift workers don’t waste their money or time trying to get data to appear.
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They actually care

I had a miscarriage while using the app to track the pregnancy (any my cycles previously). One of the hardest things was to log the end of the pregnancy with all of my apps like Oura ring, pregnancy tracker apps etc. Natural Cycles has sent countless messages validating the grieving process and hormonal changes, sending articles to read and mental health check ins. You can tell this app was designed by women. They’ve been more helpful and caring than my OB. I am grateful this app not only practices the medical side of women’s needs but also the emotional. Worth every penny.
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Partner view

Update the partner view. Add more versatility to the app and more features. And give me a dark mode please.

App is good but they are going woke.

Pretty good app for us better than any hormone drug or device but me and my wife don't like how woke they are getting. Not as friendly if you want to have baby and they're starting to use the terms “people who menstruate” versus “women”. Which this app is entirely for women not mutilated men.

User experience

🐞

Reported Bugs

3 issues

App functionality issues after updates

Bug

Syncing problems between thermometer and app

Bug

Inaccurate pregnancy and ovulation predictions

Bug

Requested Features

6 requests

Add ability to track additional symptoms and cycle data

Feature

Integrate with other health tracking devices and apps

Feature

Improve thermometer design and connectivity

Feature

Provide more personalized cycle predictions and insights

Feature

Enhance app design and user experience

Feature

Offer more flexible subscription options

Feature

FAQ

What does the Natural Cycles app do?

The app uses your body temperature to track ovulation, helping you identify fertile days for preventing or planning pregnancy. It offers a hormone-free contraception method and provides insights into different stages of your reproductive health, including postpartum and perimenopause.

How effective is Natural Cycles for birth control?

The app is scientifically proven to be 93% effective with typical use and 98% effective with perfect use. It's important to note that no birth control method is 100% effective, and it does not protect against STIs.

What are the subscription options and costs?

Natural Cycles requires a subscription to access its core features, with options for monthly and annual plans. Signing up for an annual subscription often includes a free NC° Band. US users may be covered by insurance for their subscription.

What devices can I use to measure my temperature with Natural Cycles?

You can measure your temperature using the NC° Band, an Oura Ring, Apple Watch Series 8 or newer (worn while sleeping), or a compatible Garmin device. The app adapts to your unique cycle, even if it's irregular.

Is my data safe with Natural Cycles?

Yes, advanced data protection is a priority. Unlike many free apps that sell user data for advertising, Natural Cycles' subscription fee helps protect your privacy and keep your data safe.