We’re Flo, the world’s most popular female health app

420 million women and people who have periods trust us to help them understand their bodies better^1,2.

OB-GYN recommended

420M

Downloads

77m

active monthly users

What is Flo?

Flo is a women’s hormonal health app, dedicated to supporting our community from first period to perimenopause, with personalized, data driven and science-backed insights.

Our all-in-one app offers members the tools to understand and manage their health, including personalized cycle and symptom tracking, ovulation and fertility guidance, pregnancy and postpartum support, tailored health insights and health education, and access to private communities where our members can discuss all things health and wellness.

We are the only women’s health app that has a team of 100+ doctors, scientists and medical experts that review all medical studies and information we share. Our commitment to medical credibility is why we are the #1 OB-GYN recommended period tracker*.

Flo's mission

At Flo, we believe female health has been underfunded and undervalued for way too long. As part of our mission to change that, and ensure you can trust Flo, we verify everything we share with our team of 120+ doctors and medical experts.

What's more, we also:

Give you intelligent and personalized insights to help you live better and stay well
Ensure we share evidence-based health information with you when you need it most
Fund research so we can learn more about how the female body works (e.g., by partnering with Mayo Clinic to better understand period symptoms by studying 800,000 women’s cycles)
Collaborate with trusted health partners like the United Nations Population Fund to improve female health education in countries where it’s needed most

Flo is available around the world — in 22 languages — and because 85% of people who use Flo would recommend us to a friend⁶, our community keeps on growing.

Who's behind Flo?

We’re a 450-strong team of doctors, editors, engineers, designers, and marketers who care passionately about revolutionizing the female health space. You’ll find us in Vilnius, London, San Francisco, and Amsterdam.

How you can contact us

We love hearing from the people who use Flo. If you have a question, check out our frequently asked questions or contact our support team.

Want to join the Flo team?

We’re always on the lookout for talented people who live our mission. Check out our current job openings.

Media inquiries

If you’re a journalist, check out our press center.

Highlights at Flo

“Empowering women through shared information”

''If you don’t use the Flo app already you probably know someone else who does''

“Flo is aiming to become more than just an app, with a hub covering all aspects of female health”

Flo’s milestones

Flo is founded

April 2015

Flo reached ~~1M installs~~

June 2016

~~Machine learning is integrated into Flo~~ to improve the accuracy of period predictions

March 2017

~~Ten million~~ people are using Flo monthly

October 2017

Flo signs Cooperation Agreement with UNFPA

February 2018

Flo Assistant is launched

March 2018

See all milestones

References

1. Sensor Tower, June 2022, iOS, by downloads
2. Total app downloads
3. Flo internal database. All users who logged pregnancy while using Flo (switched their goal from tracking their periods to pregnancy)
4. Flo internal database
5. Survey of 500 US OB-GYNs, DRG (2021)
6. Survey of 2,500 Flo users (2022)