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
I am really really happy to have this app. This is like a personal medical assistant and a doctor to me. It’s keeping the things in so much details and analysing my period cycles and routines. Have this in your phone and just forget about this every month “keeping in mind “ exercise, this app will do EVERYTHING for you. Really
Developer Response
Hi Madiha,Thank you for your lovely feedback. We are always happy to hear from users who are advocating for Flo, and we encourage you to continue doing so!Kind regards,Flo Support Team
Everything is behind a paywall
Marvel.woman
I have had the app for 5 years. Back when it was free and fun to read some articles or to see cycle analytics. But now everything is behind a paywall and they keep blasting you offers to pay up. Its really annoying. I am only using the app to track my cycle. Which it does accurately. Wish it was more accessible.Update: REDUCING ANOTHER STARThe App is relentless with shoving paid offers down your throat. It gives you click baity health prompts and tell you that you will only get an answer if you pay up. Today while I was studying for an exam I got a message that something I logged could be suggested of pcos (havent logged any symptoms in months lol) I click on it and another pay wall. Took a 5 min break to come here and reduce the rating further.
Developer Response
Hi Marvel.woman! We’re very sorry to hear that! We really want to help you, but we need to know your identifier in the app to find the reason for the issue and provide a solution. Please contact us from the app (Menu - Help - Contact us), and we’ll get back to you with more details on your request. Kind regards, Flo Team
Love it!
Basma Aslam
I’ve had the greatest experience with this App! I love the chats that pop up when we log something.. They are extremely interesting and educational. They also manage to lift my mood a lot of time with the cute messages.. The period predictions have been extremely accurate for me.. I also love all the trends we can see in the App. :)<3
Developer Response
Hi Basma,Thank you for your kind words! We’re very happy you enjoy using Flo. We’re doing our best to add new and useful features and are constantly working on improving the existing functionality.Kind regards,Flo Support Team
Help and Suggestions
Sajjal Ghaffar
Hey I love this App it’s helpful but I want you to add a new feature like a diet plan for the one who wants to gain or loose weight Best meal times healthy food for gaining weight targets and goals like If someone want to gain or loose weight in a week or moth like that I hope you’re getting my point Thanku so much I love this app ♥️
Developer Response
Hi Sajjal Ghaffar,Thank you for your kind words! We’re very happy you enjoy using Flo. We’re doing our best to add new and useful features and are constantly working on improving the existing functionality.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
Rs 1,100.00
Ovulation Tracker
Understand your fertile days
Rs 950.00
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.
