Flo Health is a science-backed cycle, ovulation, pregnancy, and period tracker with over 570 million downloads worldwide.*
Track your period (regular or irregular), predict ovulation, learn to spot fertile signs, follow your baby’s growth with Flo Health’s pregnancy tracker, and explore common perimenopause symptoms. Flo Health is here to support your menstrual cycle and female health journey.
Is my data safe with Flo Health?
Flo Health is the first and only period tracking app with two certifications that are internationally recognised as the gold standard in data protection and security. In 2025, Flo Health was recognised as the ISO/Information Security Management System Team of the Year at the PICCASO Privacy and Security Awards for excellence and commitment to privacy-first design.
- Anonymous Mode: Use the Flo Health period tracker without any personal identifiers being linked to your health data.
Why choose Flo Health for period and ovulation tracking?
Flo Health is more than a basic calendar — it's a period tracker and ovulation tracker designed to help you notice patterns over time.
- Over 70 trackable symptoms and moods to receive personalised menstrual cycle insights
- Support for irregular periods, pre-period symptoms, and cycle changes
- Custom reminders so you never forget to log a period or birth control
- Edit your cycle and symptom logs anytime to keep your cycle history accurate
- Cycle report summaries you can download and share with your doctor
Can Flo Health support my trying-to-conceive (TTC) journey?
Flo Health offers educational features to help you explore conception insights and better understand how to spot fertile signs.
- Fertile window and ovulation predictions based on your logged period data
- Log LH/ovulation test strip results and basal body temperature
- Discharge tracking to help you recognise fertile signs
How does Flo Health support me in pregnancy?
Once you conceive, switch to Pregnancy Mode for checklists and expert guidance.
- Pregnancy tracking with weekly updates on your baby's development
- Daily articles explaining fetal development at each stage
Can Flo Health help me with perimenopause symptoms?
Track changes during perimenopause with tools designed to help you better understand this life stage.
- Perimenopause Score to follow symptom changes
- Menopause Timeline to understand the perimenopause phases
- Tracker to log sleep, energy, mood, and well-being changes
Can I share with my partner?
Flo for Partners lets you invite your partner to support your health journey.
- Help them understand your menstrual cycle, get ovulation predictions, and celebrate pregnancy progress together.
Is Flo Health free?
The Flo Health app is free to download and includes core tools you need to track and understand your cycle.
What do I get with Flo Health Premium?
- Daily, tailored insights and expert-led videos
- In-depth pregnancy features
- Fertility insights to support your TTC journey
- 24/7 virtual Health Assistant: Explore instant, tailored insights about your body and cycle trends
- Secret Chats: Find tips from other members
- Flori: Well-Being Battery that gives you a snapshot of how your sleep, cycle, activity, and symptoms may be impacting you
Note: Flo Health Premium is HSA/FSA eligible.
Medical disclaimer: Flo Health does not provide medical advice, diagnosis, or treatment, and is not a method of birth control or conception aid. Predictions and features are for informational and educational purposes only. Always consult a qualified healthcare professional.
Flo Health period tracker is compatible with Apple Watch.
Download the Flo Health app today and join millions using a trusted period tracker, pregnancy app, and cycle tracker.
*As of July 2026
Privacy Policy: https://flo.health/privacy-policy
Terms of Use: https://flo.health/terms-of-service
This app is really impressive! It almost always predicts perfectly when my next period is or ovulation is. This app also tells me when, I should look out for anything or when something is wrong. I was surprised that you can also track your pregnancy, and or log in your symptoms during the whole duration of your cycle. The only critique I have is that you have to pay to message or access more precise information about your body, though I do understand that you can’t make everything free on this app. So what I recommend, is that you could try and add some free options such as: presentations that we could access freely without paying. But I really do recommend this app if you’re looking for a reliable and effective method to track your period!
Developer Response
Hello Soniaszekely, It’s wonderful to hear that you find the app impressive and helpful for tracking your cycle and ovulation! We appreciate your insight regarding the paid features, and your suggestions for adding more accessible options are valuable. Thank you for recommending our app to others; your support means a lot! Yours, Flo
flo got my account and idk why
Astrokittycat
i give it a 5 star bc it’s a nice app but flo has just sent me a message that said that they will delete my accout. here is all the message: In your comments, you stated that you’re under 13 (16 for EU/UK residents). Flo cannot legally process personal data for anyone of your age. Your account and all of its data will be deleted shortly. end of message. i don’t understand what i did. i juste replied to a girl’s message that she said she was pregnant at 15 yo. maybe her parents let her do that but i said that mine wouldn’t let me. why’d you do that flo? please don’t delete my account and i promise i will never be rude.
Developer Response
Hi there! 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
❤️ little idea
Nadine Heitz
First off, I would love to point out that this app is very practical and useful just the way it is.However, I think it would be even better if we good log our diagnosis (if we have any), like endometriosis, PCOS, ovarian cysts etc + key characteristics of them (like stages, symptoms, sizes and so on). Also maybe it would be useful if we could log births, abortions, surgeries we’ve had. I don’t know what the majority thinks about this but I believe it would help not only the user by keeping better track of how their situation progresses but also the app itself in making more accurate predictions. ❤️Nonetheless, a huge thank you Flo for contributing in so many of our lives! The team is doing an amazing job providing us with easy to use tools for managing our monthly cycle ❤️
Developer Response
Hi Nadine! This is super helpful feedback for us, thank you! We’re constantly working on improving our app. Our product team will review your suggestion to see if it's possible to implement anything similar to make Flo more useful to our users. Best regards, Flo Team
So minimalistic - I love it!!!
adinaaaaaaaaaaa
+++I am an OBGYN doctor and I have used and tried many, many, many (did I said many?) apps for me and for my patients just to track my period or a pregnancy 🤰 but this one is so simple and easy to use!! anyone with a smartphone can use it! From 12 year old girls to women not so “technology friendly” 🧐- The only problem i have with it is that even though I log the results from my ovulation tests, the app keeps my 15th day marked as “ovulation day” despite the fact that logs are positive in the 13rd and 14th day of the cycle and after they turn into negative tests... ❌⭕️❌⭕️
Developer Response
Hi there, Thank you for your kind words! As far as ovulation tests are concerned, Flo predicts ovulation the next day after the last positive ovulation test result is logged because ovulation normally occurs 24 to 48 hours after the LH surge. If you have ideas on how we can improve the algorithm, please contact us from the app via More - Contact support specifying your ideas. They will help us a lot!Kind regards, Valerie
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 10.9.1
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
22,99 lei
Ovulation Tracker
Understand your fertile days
59,99 lei
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
