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
Flo app is a great app for me because it traps everything could trap my mood. It can track the symptoms that I have each day and if I drink water if I did some activities may be exercising or maybe with a partner accurately showing when is your luteal phase, When is your ovulation phase, And where is your pre-period phase and period phase. if you’re taking a pill, it reminds you to take your pill and it also keeps track of everything which is a good thing.And So, I got the premium one or the subscription one and it’s very very affordable and once you access the premium features of the app you would learn a lot from understanding your body understanding the female privates and then you get access to a lot of Flo users that are also sharing their experiences on a certain subject or a certain topic and it honestly gives me an idea on how to take care and understand my body properly as a woman.Also, if you have the app you can also connect or invite your partner for them to understand your body better therefore notifies them if it’s your ovulation phase you’re having a period and what to do so that they could understand you better. And honestly that is a game changer for women who is experiencing all of these complicated cycles though it’s normal. Our bodies are very unique and very complicated and it’s a huge relief if our partners know about what’s happening or what’s changing on our bodies.
Developer Response
Hello Anjiemin, Thank you for such wonderful feedback! We're delighted to hear how the app helps you track your health and connect with your partner. Your insights into understanding your body and sharing experiences are truly inspiring. Yours, Flo
BEST FEMALE APP EVER
Its Savie
I have been using Flo since 2019!! At first, my reason for using it was for me to be able to track my flow so that I could show it to my doctor since I have a irregular menstrual cycle. As the time passes by, it became my favorite menstrual tracking app ever because I have tried using other apps and nothing comes close to the features they have on Flo!!! You can share conversations with fellow-females with the option to remain anonymous which is great because the questions there can make you aware that you are not alone and that something you are experiencing is a universal experience where other people are also experiencing it haha. There are also great tips that helped me grow. I was only 13-14yrs old when I started using Flo and now, I just turned 18 and it was a big part of my growth as a person and helped me understand myself better. I have no regrets in purchasing the premium version of Flo because it is worth every peso. Plus, they offer such great discounts especially when u always use the app and every anniversary of you joining the app, they give bigger discounts!! I highly recommend this app to teenagers like me who are struggling with the irregularities of menstrual cycles and who have no one to talk to about the things that you are experiencing.
Developer Response
Hello, Its Savie! We genuinely appreciate your heartfelt feedback and are delighted to hear how Flo has supported you through your journey. It's uplifting to know our features have made such an impact on your understanding and growth. Thank you for sharing your enthusiasm and recommendation! Yours, Flo
Honest Review
YeyeOrigines
I’ve been using this app for quite some time now and honestly, it has helped me a lot in understanding and managing my cycle better. The app gives accurate updates about my menstrual cycle, fertile days, and safe periods which really helps me stay informed and prepared. One thing I really love is how it connects to my smartwatch. It automatically tracks my physical activities, workouts, and overall health without me having to manually input everything. It makes monitoring my health so much easier and more convenient.Another feature I appreciate is the in-app chat advice. The recommendations and health tips are actually helpful, realistic, and easy to understand. It feels like having a little wellness companion whenever I have questions or concerns.The forum section is also amazing. It’s a safe and open space where women can freely talk about periods, sex, health concerns, relationships, and other experiences without feeling judged. I love reading discussions there because it reminds me that a lot of us go through the same things.Highly recommended for women who want to track their cycle, understand their body better, and be part of a supportive community.
Developer Response
Hello YeyeOrigines, It's wonderful to hear how the app has positively impacted your cycle management and overall health! We appreciate your feedback on the smartwatch connection, in-app advice, and the supportive community. It’s great to know that it feels like a helpful wellness companion for you. Thank you for sharing your experience, and we hope you continue to find value in our app! Yours, Flo
Period/pregnancy pal
gindudspa
This app is a lifesaver. It helped me understand patterns in my cycle which helped me tremendously. Especially if you suffer from PMS, you question your emotions and the quick changes in your body. Using the app helped me pinpoint certain emotions, craving, body changes to my cycle. Flo also helped me get pregnant- very quickly letting me know what days I was most fertile and would most likely get pregnant. After getting pregnant, Flo is now my companion in every step of my pregnancy. From what to eat, what to avoid, exercises, hormone changes, body changes, the baby’s progression, group chats with other women-Flo has thought of EVERYTHING. This is my first pregnancy and I would be a confused mess without this app. I cannot give this app enough to praise. When I had some questions re the app the Flo team responded to my email in hours. This app will change your life. Thank you FLO and the FLO team!!! ❤️❤️❤️❤️❤️
Developer Response
Hello gindudspa!Thank you for sharing your positive experience! We really appreciate your feedback. We’re constantly working on improving Flo, and we hope to 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
₱ 229.00
Ovulation Tracker
Understand your fertile days
₱ 299.00
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.
