Flo Ovulation & Period Tracker

In-app purchases
2.97M 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 15, 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
2.97M reviews
Bonnie Benites
March 14, 2023
Been using this consistently for the past 5 years.... absolutely love how easy it is to enter data, the interface to view it, and the analysis it offers. Tried a few others but nothing compares. Thank you for keeping this fresh and easy to use. One request is to offer more syncing options with other apps. I use Samsung Health and Garmin just as regularly and it'd be great to see all my data for a holistic view.
17 people found this review helpful
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Kaye Hansen
February 18, 2023
It is one thing to have features tucked behind a paywall that don't bother the user into "sUBSCRIBE 2 PREMIUM" pages. It is entirely another to have those features ping you multiple times every day and masquerade as regular features. There are advertisements that pop up as soon as you open the app, multiple times, that do not let you use the app until you continue to the payment plan page. Then you may exit out. Would not recommend, it's absolutely infuriating to use on a regular basis.
104 people found this review helpful
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Flo Health Inc.
November 1, 2021
Hi Kaye, We’re very sorry for your experience. Could you please contact us at support@flo.health and let us know what you would like to change? Our team will be happy to assist you! Kind Regards, Flo Support Team
February 17, 2023
Giving it such a low rating because of the incredibly annoying amount of pop-ups that come up - every single time you open the app - trying to get you to pay for the upgraded version. Stop asking people to pay, if they said no already! We can just go into the settings & upgrade if we wanted to, there's NO need for all the pop-ups. I'm literally just trying to keep track of my period, not get "sales" pushed on me. I've used this app for YEARS smh. Uninstalling & finding a different app to use.
76 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!