Flo Ovulation & Period Tracker

In-app purchases
3.05M reviews
Content rating
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About this app

Discover the most popular female health & well-being guide chosen by 280M 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
May 24, 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

Ratings and reviews

3.02M reviews
rm pajari
May 22, 2023
Too many pop screens when opening the app that can cause freezing when I try to close them. First pop up is to subscribe to premium. I've turned off everything I can but it's nagware. It ignores my set average cycle length and tries to put me on a longer one, so the warning notification won't come in time. One off longer cycles throws the calculations off for months if it's actually averaging at all. So the one thing I want a cycle tracking app to do is not working out.
23 people found this review helpful
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Treasur Luikart
May 24, 2023
Edit: the update removed BBT tracking. 🙄 The app has a lot of functionality, it's just frustrating that if you miss periods (for reasons unrelated to pregnancy) it will bombard you every single day with messages such as "time for a pregnancy test", "are you pregnant?", etc. I have entered in numerous negative pregnancy tests, yet these messages never stop. As someone who is struggling to ovulate or conceive, it can be disheartening to be reminded every day by the app that I should be pregnant.
44 people found this review helpful
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Katrina Sanford
May 27, 2023
I have been using Flo for many years now and loved it so much but the last couple months it has really taken a change and it is not what it was. I loved the widget and it vanished, and the usability has changed much. Having been both a premium subscriber and a free user, I previously was happy with both options, but now it is not as easy to use and is less useful for me
2 people found this review helpful
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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!