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About Clue

Clue is a period tracking app, a trusted menstrual health resource, and a thought leader in femtech.

  • Download the Clue app on the App Store
  • Download the Clue app on the Play Store

By combining science and technology, we are actively changing the way people learn, access, and talk about menstrual and reproductive health around the world.

  • Download the Clue app on the App Store
  • Download the Clue app on the Play Store
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11 million people in over 190 countries rely on our app.

Our content is science-based and written by reproductive healthcare clinicians and science writers to provide people with essential, evidence-based education about health, periods, and sex via helloclue.com.

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We strive to create an app that’s accessible to our diverse community of users, taking into account gender, age, race, ethnicity, accessibility, education, country of origin, socioeconomic status, and all the other aspects of an individual's background. Clue is currently available in 17 languages and growing.

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What is “femtech”?

One of Clue’s co-founders, Ida Tin, coined the term femtech in 2016 to define the group of technologies that are designed to support and advance women’s healthcare.

The technologies within this category include fertility solutions, period and fertility tracking apps, reproductive system health care, women’s sexual wellness products, pregnancy and nursing care, period care goods, at-home fertility monitoring devices and general healthcare.

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An image of Ida Tin; Co-founder and Chairwoman at Clue

Ida Tin, 

Co-founder & Chairwoman

Ida knew immediately that in order for these products to be taken seriously, the market needed to be defined, so she suggested that Clue should begin to call itself a femtech company.

By defining the group of products that are associated with female health, we are creating an entirely new category of technology. Grouping these technologies paves the way for femtech conferences and VC’s to invest in femtech and create even more products within this segment that are important and needed in the world.

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Mission

We provide trustworthy information, data-driven tools, and emotional support for everyone with a menstrual cycle — as an empathetic, scientific companion from first period to last period.

the Clue logo
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Vision

Everyone with a cycle is empowered to make informed choices for themselves around menstrual, sexual, and reproductive health and well-being.

Values

Trust

We earn people’s trust by honoring their privacy, being transparent about how we use their data, and providing them with honest and accurate health information.

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Care

Care is at the core of everything we do, both in how we support and communicate with people, and in the products and technology we create for them. We genuinely wish to help them improve their lives and live more fully.

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Science

Rooted in science, Clue’s brand and products were born out of research and data. We continually strive to find the most accurate, forward-thinking information on menstrual and reproductive health, only sharing what we confidently believe in and can provide evidence for.

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Milestones

2012

Clue founded in Berlin by Ida Tin, Hans Raffauf, Moritz von Buttlar and Mike LaVigne

2013

The Clue app is launched on iOS

2014

The Clue app is launched on Android

Clue raises a seed round of €500k

2015

3 million monthly active users

2016

American College of Obstetrics and Gynecology (ACOG) rated Clue the number one period tracking app

2017

Clue Plus, the paid version of the Clue app, is launched

Launched the #justsayperiod campaign

2018

Clue launches the content Encyclopedia: http://helloclue.com

2019

Clue launches Irregular Cycles feature, helping users identify symptoms of PCOS

Clue releases Season 1 of podcast “Hormonal” on iTunes, Spotify, and SoundCloud

2020

Launched Clue Pregnancy mode

Added Content Tab to the Clue app

Launched Clue Pregnancy mode

2021

Audrey Tsang and Carrie Walter become Clue’s co-CEOs

Clue introduces the Flex Friday policy

4.8

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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

New leadership - same vision

Carrie Walter (Clue’s former General Counsel) and Audrey Tsang (Clue’s former Chief Product Officer) are Clue's co-CEOs as of March 2021, covering these diverse areas with a collaborative leadership style that suits Clue and how they both love to work. Read more about Clue’s new leadership here.

a photo of Carrie Walter and Audrey Tsang

New leadership - same vision

A photograph of Audrey

Audrey Tsang Co-CEO

A photograph of Carrie

Carrie Walter Co-CEO

A photograph of Greg

Greg Ryzhov CTO

A photograph of Sarah

Sarah Ottawa Head of People

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Amanda Shea PhD Head of Science

We’re always working on something exciting

Check out the links below to see what we've been up to.

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Clue Period Tracking App

Available on iOS and Android, the Clue app features cycle predictions, analyses, and educational content.

Read more here

Read more **here**
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Clue Encyclopedia

We create content around menstrual health, written and fact-checked by clinicians and science writers.

Read more here

Read more **here**
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Hormonal Podcast

A podcast about hormones and how they shape our world, hosted by Rhea Ramjohn.

Read more here

Read more **here**
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Clue webinars for clinicians

Our CMO, Dr. Lynae Brayboy, leads webinars for continuing education for clinicians.

Read more here

Read more **here**
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Clue Press

Our work and leadership has been praised by some of the world’s leading publications.

Read more here

Read more **here**
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Clue Privacy Policy

Data privacy is at the core of what we do: we never have, and never will, sell our users’ data.

Read more here

Read more **here**
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Clue Careers

Looking for a new role? Want to make a real change? Check out our vacancies, we’d love to hear from you.

Read more here

Read more **here**
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Clue Newsletter

Subscribe to our newsletter to get science-backed articles and our latest updates.

Check out what goes on behind the scenes at Clue

About Clue

Clue is a menstrual tracking app, an encyclopedia, a resource for your health, and more. Here are all the posts...

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