Flo is a science-backed period tracker, ovulation tracker, fertility, and pregnancy app used by over 460 million* women worldwide.
Whether you’re tracking your period (regular or irregular), trying to conceive, following changes to your baby and your body during pregnancy, or navigating perimenopause symptoms, Flo is here to support you. Join 460 million users* who use Flo’s science-backed insights, created with 100+ doctors and medical experts, to better understand their menstrual cycle.
Is my data safe with Flo?
Your health data deserves the highest level of protection.
Flo was recognised as ISO 27001/ISMS Team of the Year at the 2025 PICCASO Privacy and Security Awards, honoring our excellence in information security management and long-standing commitment to privacy-first design.
- Anonymous Mode: Use the Flo period tracker without linking your name, email, or personal identifiers
- Dual ISO certification: Industry-leading security standards to keep your data safe
- Secret Chats: Connect with like-minded members who share tips and personal experiences
Why choose Flo for period and ovulation tracking?
Flo is more than a basic calendar — it’s a smart period tracker designed to help you notice patterns over time.
- Log 70+ symptoms and moods to receive more personalised menstrual cycle insights
- Support for irregular periods, pre-period symptoms, and cycle changes
- Clear summaries you can share with your doctor
- An accurate period tracker to help you plan ahead with confidence (Flo is not a method of birth control)
Can Flo support my Trying To Conceive (TTC) journey?
Flo offers educational features to support your journey to conceive and better understand fertility.
- Fertile window and ovulation predictions based on your logged period data
- BBT (basal body temperature) tracking
- Daily insights to help you prepare to conceive a baby
- Partner tools to support shared awareness
How does Flo support my pregnancy by week?
Once you conceive, switch to Flo for Pregnancy for useful checklists and structured, week-by-week guidance.
- Pregnancy tracking with weekly updates as your baby develops
- Visuals and diagrams to help explain pregnancy changes
- Symptom tracking, reminders, and organisation tools
- Expert-reviewed content and community stories for peace of mind
Is Flo suitable for teens and first periods?
Flo provides a safe space for teens to track their first period with age-appropriate education, helping them navigate puberty confidently.
Can Flo help me manage perimenopause symptoms?
Track changes during perimenopause with tools designed for this life stage.
- Perimenopause Score to follow symptom changes month by month
- Track cycle-related changes in sleep, energy, mood, and well-being
- Clear, personalised insights
What do I get with Flo Premium?
Unlock deeper, personalised insights and advanced tracking tools with Flo Premium.
- Daily, personalised insights
- Expert-led video courses on fertility, pregnancy, and birth
- In-depth pregnancy features for every milestone and baby stage
- Ovulation insights to support your TTC journey
- 24/7 virtual Health Assistant for educational support
- Flo for Partners: Share updates like menstrual cycle predictions or pregnancy progress, and always stay in control of what you share with your partner
Medical disclaimer
Flo does not provide medical advice, diagnosis, or treatment, and is not a method of birth control. Predictions are for informational purposes only. Always consult a qualified healthcare professional.
Download Flo today and join millions using a trusted period tracker, pregnancy app, and fertility companion.
*Total number of users who downloaded Flo, March 2026
Privacy Policy: https://flo.health/privacy-policy
Terms of Use: https://flo.health/terms-of-service
Hands down the best app to keep a track of not just your reproductive health but overall health. One just needs to put it to use fully. It helps you keep a track of all the things that might add up to any possible reproductive health condition or anything otherwise. Have been using it for 4 years straight and it just keeps getting better and better. It makes my gynaec happy too as she’s able to get a proper diagnosis of what’s been up with my body all the while. I always always always keep it at handy. Plus the article that you read on the app are actually genuine and help you better understand and make a mini diagnosis of whatever you’re going through before you see a doctor because trust me a women’s body never stays the same.
Developer Response
Hello Shrestha Airan, We appreciate your wonderful feedback! We're glad to hear how our app has positively impacted your reproductive health journey and supported your understanding of your body. Thank you for your loyalty over the years! Yours, Flo
Very helpful
Kirti112
I’ve been using this period and pregnancy app for a while now, and I couldn’t be happier! It’s incredibly intuitive and has been a huge help in tracking my cycles, understanding my body better, and planning for the future. The predictions have been accurate, and I appreciate the detailed insights it provides about each phase of my cycle.The pregnancy tracking feature is equally amazing, with weekly updates that give useful, encouraging information about what to expect. Plus, the app has a supportive, non-judgmental tone, which makes the whole experience feel personal and positive. I highly recommend this app for anyone looking to track their cycle or their pregnancy journey with ease!
Developer Response
Hello Kirti112, we truly appreciate your wonderful feedback and are delighted to hear how the app has positively impacted your journey. Your enthusiasm for the intuitive design and supportive tone resonates with us. Thank you for recommending it! Yours, Flo
I am using this since last 10-12years.
Gangersa
I m using this app since last 10-12years. And it has always showed me the right information. App has always helped me to track and monitor all my cycles and predictions with terms of periods and pregnancy both. Whatever the daily predictions shows it was a day here and there but bingo it is true. During my entire pregnancy I really enjoyed weekly fetus updates. I used to see the images and feel my baby ☺️. Thank you Flo for always helping me to be connected with myself, it would not be possible without you. I can’t even imagine to switch to any other app as I am so used to it. I can say you should give me lifetime free subscriptions 😜
Developer Response
Hello Gangersa, We appreciate your long-term support and are so pleased to hear that you've found consistency and enjoyment in using our app throughout your journey! Thank you for being a valued member of our community. Tuyos, Flo
This is the BEST period tracking app available!
Sanskriti Tomar
I have used MANY apps for the same, however this is the most reliable one. It is easy to you. And it caters to my comfort. It’s insights are brilliant. It addresses all the issues possible. It’s in built feature of automated conversation feels like consulting a gynaecologist. All the options given for the automated conversation are accurate. I have been using this app since two years not and it really helped me battle my irregular periods! I now have a healthy, regular cycle and a fit body. And if ever a change of lifestyle disrupts my menstrual cycle, this app provided solutions for the problems!
Developer Response
Hi Sanskriti,Thank you for your kind feedback! It brings us joy that you like using our app! We’re constantly working on improving Flo and we hope that we can make it even more useful and interesting for you in the future.Kind regards,Flo Support Team
Dear Flo Community,
This is a technical update that helps us improve our app and make performance even better.
Thank you for updating!
Always yours,
The Flo Team
P.S.: If you like our app, please don’t hesitate to rate and review us
Version 10.0.0
Subscriptions
Flo: Cycle Tracker
Connect your life & your period with Premium
Free Trial
Flo Pregnancy Tracker
Flo Pregnancy Tracker
Free Trial
Flo Birth Control Reminder
Set reminders for your birth control method
Free Trial
Flo Women's Health & Wellbeing
Trusted Information backed by health experts
₹ 379
Ovulation Tracker
Understand your fertile days
₹ 479
The developer, FLO HEALTH UK LIMITED, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Purchases
Location
Identifiers
Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Purchases
Location
Contact Info
User Content
Search History
Identifiers
Usage Data
Sensitive Info
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
This app has an age rating of 13+ with content restrictions. Some content may be rated higher, but access is managed by the developer through in-app controls.
