Flo Ovulation & Period Tracker

In-app purchases
4.7
4.61M reviews
100M+
Downloads
Content rating
Everyone
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About this app

Welcome to Flo! The world’s leading period, pregnancy, and cycle tracker. Join over 430 million members who use Flo as their go-to pregnancy & ovulation tracker & cycle calendar. With seven million five-star ratings, we're paving the way to better female healthcare by empowering people with periods to harness their body's signals.

Flo for Partners
Link your Flo account with your partner so they can see updates on your cycle and pregnancy. Period and fertile days predictions, we'll provide them with insights and actions they can take to support you better. Use Flo for Partners to maximize your connection when tracking your period, ovulation, or pregnancy.

There's more to tracking your period:
- Menstrual and Period Tracker: Understand symptoms like vaginal discharge and mood swings by tracking your period with Flo's ovulation and period calendar, developed in collaboration with over 100 health experts to provide valuable health insights.
- Ovulation & Fertility Window Tracker: Understand your fertile cycle and benefit from expert insights, tailored content, and information about conception and fertility.
- Women's Health Tracker: This is a calendar for your cycle, ovulation, weight, water intake, physical activity, and mood. Track your symptoms to prepare for your period.
- Pregnancy Tracker App: Receive expert information for a healthy pregnancy and birth with Flo's pregnancy calendar.
- New! Flo supports perimenopause: Know what might be perimenopause and how to tune in to your body’s changes. Get clarity on common perimenopause symptoms and what can help.

How to maximize your use of Flo’s menstrual, period, and ovulation tracker and calendar:
- Anonymous Mode: Enjoy Flo while maintaining your privacy and protecting your identity. Your name, email address, and technical identifiers will not be connected to your health data in your new Flo account.
- Reminders: Personalize Flo's menstrual and period tracker with scheduled reminders to track your cycle's start and end date. Receive notifications about ovulation, birth control pills, sleep, water intake, and more.
- Secret Chats: Safely discuss intimate topics from fertility to birth control in our supportive global community.
- Content Library: Explore thousands of articles and videos on women's health, periods, ovulation, birth control, fertility, and pregnancy.
- Health Assistant: Chat with our virtual assistant about late periods, irregular cycles, PMS, etc.
- Check if symptoms match those common of PCOS, endometriosis, or perimenopause with our Symptom Checker tool.*
- Wear OS complications & tiles: Set up a tile and complication on your watch for insights about your cycle. Flo period tracker is compatible with Wear OS 3.

Please note: Flo is not a diagnostic tool and should not be used as a method of contraception or to facilitate conception. Predictions and insights provided by the app are intended for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for any health concerns or decisions.

Contact [email protected] for assistance with our free period calendar and ovulation tracker.

To access our accessibility statement, visit: https://flo.health/accessibility-statement-android?current-location=auto-detect

Download Flo today and join the millions of women who trust Flo as their free period and menstrual cycle tracker, calendar, and pregnancy app.

*Not available in the UK or EU/EEA.
Updated on
Nov 20, 2025

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

4.7
4.57M reviews
Tyler Ritcey-Conrad
November 8, 2025
Downloaded the app to help my partner track their cycle and offer support. Their free version is very in depth and I wanted to connect through Flo for Partners. Upon doing so my calendar was not as inclusive and the app kept pushing me to pay for premium. It was implied this would unlock the ability to edit the calendar so I did so. The calendar remained the same, only showing cycle information and not allowing the partner to help by adding details. Premium does not add much, if any, value.
Did you find this helpful?
Flo Health Inc.
November 8, 2025
Hi Tyler! We truly appreciate your feedback! We put our users first and would love to hear more on what we can improve in the app to make it more useful. Please send your suggestions to Menu - Help - Chat icon. Your feedback will be really valuable for us. Kind regards, Flo Team
Dani Fisher-Hynd
September 26, 2025
The app is useful. However, I am disappointed that it has been taking payments for a yearly subscription once a month. I had signed up for a month long trial that was supposed to cost $1.39 (CAN), but i was charged the cost of the trial plus a yearly subscription of $44.79 (CAN), and has continued taking the yearly subscription amount since. I contacted the help email address and had not received a response.. I just sent a second email to them. Hopefully I hear from someone soon.
Did you find this helpful?
Flo Health Inc.
September 26, 2025
Hi Dani! We’re sorry to hear that! The only way a user can sign up for a subscription is by tapping Continue on a screen that offers Flo Premium and confirming their consent with their password or Touch/Face ID or by subscribing at app.flo.health. If you contact us directly from the app (Menu — Help — Chat icon), we’ll be happy to help! Flo Team
Laura Palko
October 13, 2025
This app used to be fantastic. I used it for tracking my first 3 pregnancies and always recommended it to people. But that is not the case any longer. The only thing it shows now is how far along you are. Literally everything else is behind the paywall. It used to show you how big your baby was, where they are developmentally, and give you tips on what to expect. Now, anything you click on prompts you to pay for a subscription. It's ridiculous and I will be deleting the app.
98 people found this review helpful
Did you find this helpful?
Flo Health Inc.
October 14, 2025
Hi Laura! 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 — feel free to send us a message! Kind 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!