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NEW Guided Journey on Flo️‍. Start your journey to sexual satisfaction under the expert guidance of sex therapist Casey Tanner. Get started
Over 7 million 5-star ratings1

Why our users love the Flo App

Get to know your body better with the #1 women's health app worldwide2

So, what can you do with Flo?

Whether you’re tracking your period, ovulation for getting pregnant, or pregnancy, we’ve got you. Flo works in partnership with 120+ doctors and health experts to bring you essential insights about women’s health.

“My patients love Flo because it doesn't just tell them when their period is likely to start;
it also gives precise predictions about their fertile days and ovulation.”
Dr Allison Rodgers
Reproductive Endocrinologist,
OB-GYN at Fertility Centers of Illinois
& Member of Flo’s Medical Board

According to people using Flo:

1 in 2

say Flo helped them 
know when to visit the doctor for a health
 concern⁷

64%

say Flo helped them love and listen to their body more⁸

98%

say Flo’s fertility and ovulation predictions helped them on
their journey to
 pregnancy⁹

Nearly

1 in 2

say Flo helps them improve their
sex life¹⁰

Period tracking

Easily track your period and set cycle-related reminders. You’ll know when your period is coming—and which symptoms you might expect at different stages of your cycle.
Find out more about Flo for Tracking Your Period
“I have been using Flo for over 4 years now, and it has been great about keeping my data safe and logging my periods and providing predictions. I use it every month.”
Flo user
App store review

Ovulation tracking for getting pregnant

Predict your likely fertile days and find out how to prepare your body for getting pregnant naturally. Your go-to source of information about fertility and ovulation.
Find out more about Flo for Getting Pregnant
“LOVE everything about this app. It actually helped me track ovulation and get pregnant after trying for years with no hope!”
J. l. / J****I
App store review

Week-by-week pregnancy tracking

Get support on your path to parenthood. Know how your baby is likely to develop week-by-week and how your body might change, too.
Find out more about Flo for Pregnancy
“This is my first pregnancy and Flo has taught me everything from symptoms and bodily changes to skincare products and nutrition.
I never knew that your center of gravity changes during pregnancy!”
Flo user
App store review

Other features you'll get
as standard with Flo

Share all of this (and more) with your partner

Get your partner on the same page about your cycle, your fertile days, or your baby’s growth. With insights into your mood and body, they’ll know when to have sex if you’re trying to conceive or when you might need extra TLC during your cycle.
Find out more about Flo for Partners
“Now that he understands my cycle better and can visually see what’s happening [in my body], it’s allowed more room for empathy, compassion, and dialogue.”
Flo User
Paid interview

Go anonymous

We put you in control of your data. For maximum privacy, our award-winning Anonymous Mode lets you use Flo without your data being attached to personal details like your name, email address, or technical identifiers.
Find out more about Anonymous Mode
“This is a great tool I have been using for just a few days, but I can see the power in it. So much more affordable and all of your information is private.”
Flo user
App store review
Understand your body better with Flo
Download the Flo app now

Why are millions using Flo?

Accurate predictions,
whatever your goal

Help center

Information you
can trust

Why you can trust Flo

You're in control

of your data

Our privacy portal

Frequently asked questions

Flo uses artificial intelligence to make more reliable predictions about your cycle, meaning you’re always prepared for your period or predicted fertile window. In fact, 90% of people using Flo say the app accurately predicts the start of their period. You can start using Flo without any information about your previous cycles, but it’ll start making accurate predictions more quickly if you log the dates of at least three previous periods.


*Flo should not be used as birth control.

Flo has both free and paid versions, with all the basic features available even if you don’t pay. If you’re using the free version, you’ll have the option to move to the Premium version at any time. With Flo Premium, you’ll get access to even more useful features, like custom cycle reports and weekly health insights.

You can now share insights about your cycle with your partner using Flo for Partners. About 60% of women believe that their partner’s lack of knowledge about female health affects their relationship. We’re actively trying to change that with Flo. Whether your goal is to track your cycle, get pregnant, or follow your baby’s development, your partner will get health insights and tips to proactively support and understand you.

To access Anonymous Mode, go to “Settings” and tap your profile picture. You’ll see the Anonymous Mode button just below. In this mode, you’ll still benefit from accurate predictions and personalized insights, but without any connection to your personal information.

References

1.  Sensor Tower, Jan 2024, iOS & Android, by category ranking
2.  Sensor Tower, Jan 2024, iOS & Android, by category ranking
3.  2,500 people surveyed (2022)
4.  3,800 people surveyed (2023)
5.  From those who say Flo helped them to conceive (74%). 2022 survey, 2,500 Flo users
6.  2,500 people surveyed (2022)
7.  In countries benefiting from Flo's Pro Social Initiative. Available on Android. Includes access to all Premium features in your language for one year from upgrade date.
8.  2,000 people surveyed (2021)
9.  Based on a survey of 2,500 US women aged 18-45 y.o (2023)