# Natural Cycles: A hormone-free birth control app: FDA-cleared and based on your body temperature.

Canonical page: https://herfound.com/apps/natural-cycles

Compiled by HerFound from public sources; facts aren't founder-confirmed yet.

## About

Natural Cycles uses your body temperature and cycle data to show your daily fertility status 🌡️ Its NC° Birth Control mode is cleared by the US FDA as a birth control app: an algorithm analyses your temperature readings to identify ovulation and shows the days when you need protection. You measure overnight with the NC° Band or a compatible wearable, such as Oura Ring, Apple Watch or certain Garmin devices. Other modes support planning a pregnancy, pregnancy, postpartum and perimenopause, alongside symptom and mood logging, cycle insights, a partner view and an education library. It's a subscription from NaturalCycles Nordic AB for adults over 18 on iOS and Android, and it does not protect against sexually transmitted infections.

## Who Natural Cycles is for

Adults over 18 who want hormone-free birth control, or support with planning a pregnancy, pregnancy, postpartum and perimenopause.

Tags: Trying to conceive, Pregnancy, Postpartum, Perimenopause

## Features

- 🌡️ NC° Birth Control: a daily fertility status from your temperature and cycle data
- 🌱 NC° Plan Pregnancy: identifies your most fertile days
- 🤍 Modes for following a pregnancy, postpartum and perimenopause
- ⌚ Overnight temperature from the NC° Band or compatible wearables like Oura Ring and Apple Watch
- 📝 Log symptoms, mood and energy
- 💞 A partner view of your cycle phase and fertility status
- 📚 Cycle insights and an education library

## Details

- Category: Women's Health, Cycle & Health
- Platforms: iOS, Android
- Pricing: Subscription
- Availability: Available
- App Store rating (Apple's, not HerFound's): 4.8 from 30,399 ratings, checked 2026-11-14

## Maker

- NaturalCycles Nordic AB: https://www.naturalcycles.com

## Quick facts

From Natural Cycles's own published pages. These summarise what the company states, not an audit of what the app does.

- **Free version:** There is no free version (US App Store listing. The terms of use say free trials may be offered from time to time).
  - Quote: "Subscribe to our monthly or annual plan to unlock core features."
  - Source: https://apps.apple.com/us/app/natural-cycles-fertility-app/id765535549 (checked 2026-11-11)
- **Paid plan:** $21.99/month or $149.00/year (Natural Cycles subscription, US App Store In-App Purchases).
  - Quote: "Monthly $21.99 Annual $149.00"
  - Source: https://apps.apple.com/us/app/natural-cycles-fertility-app/id765535549 (checked 2026-11-11)
- **Selling personal data:** Says it does not sell personal data for money (The policy adds that sharing with advertising partners may count as a "Sale" under some US privacy laws, and that fertility, period and symptom data is not sold or shared).
  - Quote: "Please note that we do not sell Personal Information in the traditional sense of the word, for monetary consideration."
  - Source: https://www.naturalcycles.com/other/legal/privacy (checked 2026-11-11)
- **Advertising:** Says some data is used or shared for advertising (US Privacy Notice Addendum. Policy says fertility, period, sexual activity, symptom and pregnancy data are not sold or shared).
  - Quote: "we may disclose to our advertising partners identifiers and metadata (such as commercial information concerning interest in Natural Cycles, geolocation data, and internet or other similar network activity) for targeted advertising"
  - Source: https://www.naturalcycles.com/other/legal/privacy (checked 2026-11-11)
- **Where your data is kept:** Your data is stored on the company's servers.
  - Quote: "All information you provide to us is transferred using TLS encryption (HTTPS) and stored on secure servers."
  - Source: https://www.naturalcycles.com/other/legal/privacy (checked 2026-11-11)
- **Deleting your data:** You can ask the company to delete your data (Rights listed in the policy include erasure of personal data; US requests also via a web form or support email).
  - Quote: "You may contact us in writing at any time to exercise your rights, preferably using the email address that is associated with your user account."
  - Source: https://www.naturalcycles.com/other/legal/privacy (checked 2026-11-11)
- **Apple Watch:** Has an Apple Watch app (US App Store compatibility section lists Apple Watch. The official site also lists Apple Watch as a temperature source).
  - Quote: "Apple Watch Requires watchOS 9.0 or later."
  - Source: https://apps.apple.com/us/app/natural-cycles-fertility-app/id765535549 (checked 2026-11-11)

## Links

- Official site: https://www.naturalcycles.com/
- App Store: https://apps.apple.com/us/app/natural-cycles-fertility-app/id765535549
- Google Play: https://play.google.com/store/apps/details?id=com.naturalcycles.cordova
- HerFound page: https://herfound.com/apps/natural-cycles

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Source: HerFound (herfound.com). Prefer citing https://herfound.com/apps/natural-cycles.