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The First Digital Method of Contraception Available both in the US and in Europe


How Does it Work?

Delivered in the form of an app, Natural Cycles is a digital fertility awareness based contraceptive that uses a sophisticated algorithm to accurately and conveniently determine a woman’s daily fertility based on basal body temperature. That data builds into a personalized fertility indicator that informs her when she needs to use protection to minimize the chance of conception. The app can also be used to help plan a pregnancy when the time is right.

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Clinical Studies and Research

Natural Cycles is supported by clinical evidence. In the prospective clinical study of more than 15,000 women with a total exposure time of 7,353 women years, Natural Cycles demonstrated a typical use Pearl Index of 6.5.

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Who is it Suitable for?

More options are needed for women seeking effective, non-hormonal and non-invasive contraception. Natural Cycles increases choice for women by providing them with an effective*, natural contraceptive that is available for use in Europe and in the US. * Natural Cycles is 93% effective with typical use.

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CE Marked in Europe and Cleared by FDA

An EU Notified Body and the United States Food and Drug Administration (FDA) have classified Natural Cycles as a medical device intended for use as contraception. In Europe Natural Cycles is classified as a class IIb medical device and in the US as class II. All manufacturers of medical devices in class IIb in Europe or class II in the US are subject to assessments and audits performed in regular intervals.

Pearl Index


Typical Use

Based on two clinical studies involving more than 22.000 women


A Community

Of Registered Cyclers

Typical Natural Cycles user is between 25 and 35 years old


Used Globally

Across Countries & Territories

Natural Cycles has registered users from over 200 countries and territories.

Satisfaction Rates


In the App Store

Based on the reviews from the users