Flo Ovulation & Period Tracker

In-app purchases
2.98M 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
Mar 17, 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
2.98M 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.
73 people found this review helpful
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March 18, 2023
Flo is awesome for easily logging periods/cycle length & symptoms (not just during periods) and tracking other health factors like water intake & sleep. The constant ads for the premium version are admittedly annoying, but having used the trial, it may be worth it if you want an in-depth analysis. I just wish that it was clearer which features are paid, & that the app was more gender-neutral in its language and color scheme. At least maybe have more options for different-colored themes?
27 people found this review helpful
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Alex Nicholes
February 8, 2023
Easy to use and informative. Not all that useful for people with irregular cycles except as a tracker. Personally, I have PCOS and endometriosis. I had hoped the AI would be able to pick up on patterns I couldn't and help us get pregnant. After 19 months, no patterns have emerged. Still a good record keeper. The Dr's chats are good and informative. A lot of it I've heard from my PCPs and OBGYNs l, but if I was new to the world of fertility, it would be wonderful. Overall, it's a good app.
123 people found this review helpful
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Flo Health Inc.
February 14, 2023
Hi Alex! It’s feedback like yours that helps us to continue to improve our app - thank you! We will add your suggestion to the list of feature requests that are reviewed by our product team on an ongoing basis. Best regards, Flo 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!