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Getting started

How Natural Cycles works

Natural Cycles is the world's first, and only, contraceptive app. Based on an advanced bio-statistic algorithm, Natural Cycles analyzes a woman's basal body temperature (BBT) and Luteinizing Hormone (LH) data ...

Basics for using Natural Cycles

To get started with Natural Cycles you will need the following: 1. Natural Cycles account You can access Natural Cycles via your web browser, by visiting www.naturalcycles.com. Download the Natural Cycles ap...

How long will it take the app to get to know my cycle?

The app works effectively from the beginning and it takes around 1-3 cycles for the app to get to know you. When you start with Natural Cycles Prevent it’s normal to get many red days, and for users who Plan a...

When can I start using Natural Cycles?

You can start using Natural Cycles at any point in your cycle. The most important thing is that you get started with measuring and that you measure as many days a week as possible, before getting out of bed or ...

Getting started after a pregnancy

When signing up for Natural Cycles, you can enter if you’ve recently been pregnant and if your cycle has started yet or not. This is valuable for the app to know, regardless of if your pregnancy ended in a live...

When can I start after being on other contraception?

You can start with the measuring few days after quitting your hormonal contraception (you can use Natural Cycles along with the IUD/coil). This way, Natural Cycles can detect your first ovulation before your na...

Good to know after being on hormonal contraception

You can start your measuring at least five days after you quit your hormonal contraception. Please note that it can take a while for your first ovulation to occur, and you will be given only Red days for Preven...

Fertility Indicators used by Natural Cycles

As a result of the different hormones that are released during the menstrual cycle, there are several indicators that can determine a woman's fertility status and where she is in her cycle. Natural Cycles uses ...

Share data with your partner

If you want to share your data with your partner, the easiest way is to have your partner download the app and stay logged into your account so you both can keep track of your fertility. Download the app on A...