Flo Ovulation & Period Tracker

In-app purchases
2.9M reviews
Content rating
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About this app

Discover the most popular female health & well-being guide chosen by 257M women, co-created with 100+ leading health & medical experts, and acclaimed medical institutions.

- Your data protected and securely stored. Your health data will not be shared with any company but Flo, and you can delete it at any time.
- The first period and ovulation tracker to achieve ISO 27001, the internationally recognized standard for information security.
- Content, reviewed by 100+ doctors and health experts
- Partner of the United Nations Population Fund in the area of reproductive health

No matter your life stage or reproductive goal, personalize Flo Ovulation and Period Tracker to make it unique and relevant for you. Based on advanced AI technology, Flo period calendar helps you to monitor your menstruation, ovulation, cycle, fertility, or pregnancy accurately. As a one-stop solution for all things female health and well-being, you can track all-in-one: period start date and length, fertile window, ovulation day, PMS symptoms, flow intensity, birth control, water intake, sleep and step counter, and much more. Follow your baby’s growth weekly during pregnancy.

Your cycle is so much more than your period. Every woman may experience different symptoms, mood swings, and energy levels each cycle phase. Together with a team of 100+ health experts, Flo Ovulation and Period Tracker helps you to understand your body better.

Get pregnant as soon as naturally possible for you by identifying your most fertile days, and receiving tailored insights. With Flo’s pregnancy mode you’ll calculate your due date, set a countdown, and learn the essentials of newborn care.

Log 70+ symptoms and activities to get the most precise AI-based overview of your body’s patterns. Keep a diary of your weight, water intake, physical activity, sex drive, moods, and PMS symptoms to monitor changes and receive timely insights.

Schedule reminders of your period approaching, start and end date, your ovulation day, and personalize Flo Ovulation and Period Tracker to get notifications about weight, sleep, water intake, step goal, and birth control.

Safely discuss intimate topics, ask questions anonymously and get support from one of the largest female communities worldwide.

Time to check in! Flo period tracker is now compatible with Google Wear OS 3 so you can use it on your smart watch. Get predictions, log your period and sync with your cycle, right from your wrist.

In Anonymous Mode, Flo transfers only essential data, like cycles and symptoms, to a new account that does not contain any personal information, such as your email, name or technical identifiers. This way, you’ll be able to continue enjoying personalized insights and accurate predictions, but with the option to remove any connection with your identity.

Download this menstrual cycle tracker and join millions of women and teens who trust their cycles to this Period Tracker & Ovulation Tracker & Fertility Calendar.

Note: Flo’s predictions should not be used as a form of birth control/contraception.


Accessibility statement: https://flo.health/accessibility-statement-android?current-location=auto-detect
Updated on
Feb 2, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 7 others
Data is encrypted in transit
You can request that data be deleted
2.9M reviews
Josie R.
January 23, 2023
It's great for tracking, but you cannot use any resources in the app with paying for a monthly subscription. I can litterally Google of the information myself for free, it's just convenient to have it in one place. I would rather watch ads before reading an article or something. The monthly amount keeps going down (I assume I am not the only one who doesn't want another subscription to pay for) so I don't see the point.
55 people found this review helpful
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The Happy House Life
January 14, 2023
This app used to be my favorite but the constant pop-ups for the premium subscription is awful. Happens essentially every time the page refreshes. Their generic response is that the revenue from premium helps them improve the app. Yes, we get that, but tone down the ads! Make it happen once when you log in or something, not every couple of seconds. It's absurd and I'm currently looking for a different app.
195 people found this review helpful
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Rachel N.
January 11, 2023
It's extremely unclear that there's a free option. It looks like you have to do a pro trial, which actually signs you up to pay for a subscription once the trial is over. The only way to not do this is to click an easy-to-miss X in the upper left corner. But, this stupid popup will keep popping back up in your face every time to return to the app. It looks like the free version only lets you log your period and symptoms. "Fertility Friend" is a better free option.
66 people found this review helpful
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Flo Health Inc.
January 10, 2023
Hi Rachel! We understand you’re upset that some features are now available only on Flo Premium. Funds from our Premium subscriptions allow us to keep building and improving the app, while keeping basic cycle tracking free for everyone. We welcome your thoughts — email us at support@flo.health Kind Regards, Flo Support Team

What's new

Dear Flo community,
This is a technical update which helps us improve our app and make its performance even better.
Thank you for updating!

Always yours,
Flo team

P.S.: If you like our app please don’t hesitate to rate and review us!