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’ve been using Flo for a while now and it’s been super helpful for tracking my cycle, symptoms, and overall health. The reminders and predictions are pretty accurate, and I like how it offers insights based on my input. The interface is clean and easy to use. It’s also great for logging moods and symptoms, which helps me notice patterns. Definitely recommend it for anyone wanting to stay on top of their cycle.”
Developer Response
Hello M.o.u.p.h, we appreciate your kind words and are delighted to hear that our app has been so helpful for tracking your cycle and health. It's fantastic to know you enjoy the insights and user-friendly interface! Thank you for recommending it! Yours, Flo
Flo
Jemmylicious
Flo has been great for me in a long time. It keeps me on track on my period and my health overall. It’s your assistant in your menstrual cycle, before menstruation and after. It is always there to help you know more about yourself/body, when to conceive not being able to conceive. It is like your home doctor and always there to care, support and remind you on everything concerning your body. Flo is a life saver! ❤️💖💕
Developer Response
Hello Jemmylicious, We appreciate your wonderful feedback! It’s heartening to hear how much Flo supports you in tracking your health and menstrual cycle. Your experience means a lot to us, and we’re grateful for your support! Tuyệt vời, Flo
Recommendations
Iluu56
Love the App so far❤️. But i would love to see a separate bar to track cramps as a symptom sometimes its severe sometimes barely there sometimes bearable sometimes i want to die and am sure this info might help when speaking with a physician. Thank you.
Developer Response
Hi there! Thank you for taking the time to post this review! We appreciate it. We’re doing our best to add new and useful features and improve the existing functionality. Kind regards, Flo Team
Best app -
NandiekysNaa
Never been so confident with tracking my periods plus all the little features such symptoms and the likes as I feel while using Flo. The updates and fixing bugs is really helpful. Not to mention the privacy as well. Thanks Team Flo✌🏾
Developer Response
Hello NandiekysNaa!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 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 10.4.0
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
9,900.00 TZS
Ovulation Tracker
Understand your fertile days
22,900.00 TZS
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
