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Track your period and ovulation with Clue to understand how your body works.

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Get (period, pms and fertile window) predictions you can trust

All of our predictions are based on the most up-to-date science. We collaborate with scientists and universities to ensure continuous improvements.

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See all your tracked data in a clear overview

Never get lost in your tracked data. With frequent analysis reports and a clear calendar overview you’ll draw conclusions quickly.

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Get in-depth information to learn about your body

Learn about personal patterns with 30+ tracking options like cramps, skin, hair, sleep and more to gain a better understanding of how your body works.

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You are always in control of your data

We keep your data safe and secure and you can save or delete your data any time. We will never sell your data or use it to show you personalized ads.

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Track your period and understand your body better. Get the app:

Learn about your body and women’s health

Steph from Clue welcomes you to read the newsletter
Hi, I am Steph! I’ll send you both educational and entertaining stories about women’s health and share tips and tricks to get the most out of your Clue app!

Happy Clue users

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4.8

115k ratings

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

Nicole Layton

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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

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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

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Track your period and understand your body better. Get the app: