Tell Flo about yourself and log how you’re feeling.
Our clever tech will help predict where you are in your cycle (and what you might expect now and in the future) so you can understand your body even better.
67M+
Women and girls who have periods trust Flo².
90%
of users say Flo accurately predicts period start³
71%
of users say Flo helps improve how they manage menstrual symptoms⁴
“Flo gives you insights into why you feel the way you do. It may sound silly but I didn’t realize how much of my mood and behavior is determined by my cycle. It feels validating and has given me a new connection to my body."
Flo User
App Store Review
Get accurate period predictions
Know when your period’s likely to arrive this cycle and in the future with our clever AI, so you’re always one step ahead.
Live more in sync with your cycle.
Cravings before your period starts? Bloating around ovulation? Track 70+ symptoms and events, learn what they might mean (and how to manage them better), and know how you might feel tomorrow — or even next cycle.
Find expert content you can trust.
From your first period to your last, know what to expect at every life stage with hundreds of articles, videos, and courses cocreated with our team of 120+ doctors and health experts.
Share all this (+ more) with your partner.
Get the support you need from your partner during your cycle with expert insights and proactive tips sent straight to their very own Flo app. We’ll help them understand why you might be feeling a certain way and how they can help.
Remember: Your body, your data.
We offer end-to-end encryption, secure access, and the ability to delete anything you’ve logged at any time. You can also access the app without sharing personally identifiable information, such as your name or email address, thanks to our award-winning anonymous mode.
Switch to Flo for Getting Pregnant or Flo for Pregnancy.
If you decide you want to get pregnant, you can switch to our Trying to Conceive mode for your personalized journey to parenthood. Plus, you can track your pregnancy with Flo too.
Why our users love the Flo App,
Get to know your body better with the #1 women's health app worldwide!
Flo for Tracking Your Period in the Media
Flo has been featured in top female publications!
“Flo is the period tracker app I’ve been using since 2016. The app shows you graphs related to your menstrual cycle. I’m also able to log PMDD [premenstrual dysphoric disorder] flare-ups, which helps me keep track of frequent mental and physical symptoms that I’m experiencing.”
“Best for: First-timers, after simple easy-to-use period apps.”
“Best app to track your menstrual cycle. Having used the free version of Flo, I was unsure how much benefit there’d be to the premium version. But, after leaning into the new features, I’d recommend it to anyone wanting to feel more clued up about their cycle. My favourite feature is the diary function, which offers in-depth insights on irregular cycles.”
Questions about your body, answered by experts.
Frequently Asked Questions.
No matter what questions you might have, we've got you covered with the information you can trust.
Accurate predictions, for all goals.
Information you can trust.
You're in control of your data
Know your body. Own your health.
Over 420 million people³ around the world use the Flo app to track their periods, ovulation, and pregnancy.
Flo App
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