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Become a co-owner from just €10 and shape the future of menstrual and reproductive health with us.

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Live in sync with your cycle

From period to pregnancy tracking, Clue's got you covered.

App Store

Play Store

4.8

2M+ ratings

Data secure

Ethics driven

Female led

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A group of 3 phones with a grey background

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Data is power, and responsibility: what we believe as Clue’s Co-CEOs

The recent overturning of Roe vs Wade has not only changed the landscape of reproductive rights in the US, it has also, like the original decision, brought privacy to the forefront of our minds and conversations.

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Track periods, ovulation & PMS

Track periods, ovulation & PMS

Get predictions based on the most up-to-date science

Keep track of your cycle lengths to observe patterns

Your predictions get more accurate every time you track

Discover patterns in your cycle

Use 30+ different tracking options to find out how your cycle affects things like mood, skin, energy levels and much more.

А list of available tracking options in the app

an image of four phones with various views of the Clue app.

An image of four phones with different views of the Clue app over a grey background

Make choices that are right for you

Learn about your body from the data in your app and our science-based articles to make informed health choices.

4.8

2M+ ratings

Why people love Clue

Accurate, informative, easy to use! The clean and fun design makes tracking your cycle, dare I say, fun?

Nicole Layton

Clue is such an invaluable app! As someone with PCOS and other health conditions that contribute to painful and irregular cycles, Clue has helped me to see patterns in my cycle.

Sophie Purdie

This app is almost scary with how accurate it is in prediction of ovulation and menstruation times. I'd give 10 stars if I could.

Esther Mungai

11 million people trust Clue with their data

Keeping your private health data safe and secure has always been at the core of everything we do. You can import, export, or delete your data any time.

Keeping your private health data safe and secure has always been at the core of everything we do.
You can import, export, or delete your data any time.