Natural Cycles Fertility App

Natural Cycles Fertility App

Decode your hormonal health

29K ratings
1076 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 #9 for iPhone
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 Fertility App

5.8.1

July 7, 2026

A few polishes for a better experience.

Subscription plans

Yearly with 7 day trial

Yearly with 7 day trial

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

Charts

Top Grossing

The app has maintained its position at 30 recently.

Last updated on July 18, 2026.

Top Free

📈 108+1

Health & Fitness

This app rose +1 position in Health & Fitness chart.

Last updated on July 18, 2026.

Events

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

Read more about New! NC° Perimenopause is here

New! NC° Perimenopause is here

Turn hormonal shifts into actionable insights.

Oct 14, 2025 Nov 9, 2025

User reviews

BEWARE- NO REFUNDS

They claimed they sent an email regarding auto renewal, but it was never received. The day it renewed I reached out to them in the AM and they said their policy is to not do refunds. I clearly have not used the year of the product. Seems very suspect that they would not refund and seems to speak to their product.
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Cannot use with other birth controls

When signing up for a membership, NOWHERE does it say you cannot use cycle tracking if using another form of hormonal birth control. Its also ridiculously expensive. $21 a month to track data you’re already getting from a $500 oura ring? No.

Can’t disable AI

I love natural cycles but they recently started using AI and there is no way to disable it. I will have to stop using it if they do not add a feature to disable it soon. I do not support the use of AI due to its environmental impact. I also think it is keeping everyone stupid just like the government wants us. That’s a big enough deal for me to stop using a company that I love.
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Hard for shift workers

As a shift worker I work nights. The wrist band doesn’t work as I don’t sleep for four hours in the time slot needed for a reading. The thermometer only works on the 14 days I’m not on nights in a four week period, otherwise the temperature doesn’t count as it’s “different sleep”. And I can’t afford an Oura ring at the moment. The one month I had holiday I will say it worked wonderfully, and I’m going to save for a ring, but it should be much clearer from the outset that shift workers may need the more expensive measuring tool for it to be of any use collecting temp data etc. Currently feels like a waste of money and isn’t really getting used as there is no pattern able to be detected at the moment
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Shady and predatory subscription policies.

Tried this app for a month and didn’t love it and switched to a different one. Didn’t realize the subscription was still auto-renewing and it renewed for a full year with no way to get a refund. Most apps nowadays offer a grace period to refund when you didn’t actually mean to renew. Not offering this is shady, surely everyone that works at this company understands that they are stealing money from unsuspecting women while not offering them any value in return. I’m not suddenly going to start using this app just because I’m unable to get a refund. You can do much better than this.
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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.