Natural Cycles: Fertility App

Natural Cycles: Fertility App

Ovulation Tracker・FDA-cleared

30K ratings
1431 reviews
With Ads#34 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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+1

What's New in Natural Cycles

5.9.0

September 11, 2026

We have polished the app for an even smoother 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 September 17, 2026.

Top Free

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

Last updated on September 17, 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

Knowing my Cycle

This app has allowed me to truly track my cycle and know when the best time to concieve is. I’m so happy to have went through with it

Sneaky and Dishonest

I had the free trial of this app when I purchased my Oura ring. I guess when I created a profile it connected to my apple ID, therefor when they sent out the “reminder” email I never received it. How was I supposed to know this? These kinds of practices are deceptive and sneaky, a way for them to get their $150 and i had no clue. Mind you, i’ve only had access to the “demo” version of the app despite them taking $150 of my hard earned dollars as well. I am extremely upset and now I will not be able to afford this months bills. But I am glad Natural Cycles got their $150.
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I wish that you weren’t using AI.

I love this app and I like using it, it’s a very simple way of preventing pregnancy and knowing my cycle and how everything is affected with it. My only issue is the use generative AI in the app. I feel as though, if this is made by genuine professionals, why would you need a something like AI to give information FOR you? And with knowing that it can give false information. I also feel as though, if I’m paying to have the information about my body and about my cycle, then I would want that information to given by other PEOPLE who have that same EXPERIENCE. You can’t learn anything about the body from something that doesn’t have a soul. Please, get rid of it.
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Good except…

Please make the AI optional. I’m really not a fan of generative AI and I really dislike that I am not given the option to opt out of it. The app also feels a little non-intuitive with finding information. Besides this, I have been using this for a couple of years now and find it helpful to track my cycle.
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Love it!

Coming up on a year of using natural cycles. Love the app. It’s been very very accurate for me. I use my Apple Watch and testing strips when the app suggests. It’s crazy how spot on it has been for me. My husband also finds the partner app helpful, he says it helps him know when he needs to be more careful and when my moods may be different. All around, love it!
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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.