Privacy-first design with Anonymous Mode and strong data protections (ISO 27001 and ISO 27701)
Comprehensive cycle coverage: period, ovulation, TTC, pregnancy, and perimenopause
TTC-focused features including fertile window predictions and BBT tracking
Wear OS support enabling cycle insights on smartwatches
Calendar-based reminders and temperature-based planning may be less emphasized compared to some competitors (note: symptom checker not available in UK/EU)
Some markets may have feature availability differences (e.g., Symptom Checker restricted in UK/EU)
Non-availability of certain calendar-centric features that some competitors advertise
About Flo Ovulation & Period Tracker
Flo Ovulation & Period Tracker is a health & fitness app developed by Flo Health Inc..
Download Statistics
Flo Ovulation & Period Tracker has been downloaded 200 million times. In the last 30 days, the app was downloaded 2.2 million times. It is ranked #1 in health & fitness.
User Ratings
Flo Ovulation & Period Tracker is rated 4.71 out of 5 stars. The rating is based on 5 million ratings.
App Information
Flo Ovulation & Period Tracker is FREE to download. The last update was on December 8, 2025.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play April 2016.
Description
Flo is a science-backed cycle, ovulation, pregnancy, and period tracker with over 530 million downloads worldwide.*
Track your period (regular or irregular), predict ovulation, and learn to spot your fertile signs, follow changes to your baby and your body with a pregnancy tracker, and explore common perimenopause symptoms. Flo is here to support your whole menstrual cycle and female health journey.
🌍 Is my data safe with Flo? Your health data deserves the highest level of protection.
Flo is the first and only period tracking app with dual ISO 27001 and ISO 27701 certifications, internationally recognized as the gold standard in data protection. In 2025, Flo was recognized as ISO 27001/Information Security Management System Team of the Year at the PICCASO Privacy and Security Awards, honoring our excellence and commitment to privacy-first design.
- Anonymous Mode: Use the Flo period tracker without linking your name, email, or personal identifiers. - Secret Chats: Connect with 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 period tracker and ovulation tracker designed to help you notice patterns over time.
- Over 70 trackable symptoms and moods to receive more personalized menstrual cycle insights - Support for irregular periods, pre-period symptoms, and cycle changes - Clear summaries you can share with your doctor
👶 Can Flo support my trying-to-conceive (TTC) journey? Flo 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 - BBT (basal body temperature) tracking
🤰 How does Flo support my pregnancy week 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 - Expert-reviewed content and community stories for peace of mind
👩 Can Flo help me explore common perimenopause symptoms? Track changes during perimenopause with tools designed to help you better understand this life stage.
- Perimenopause Score to follow symptom changes month by month - Menopause Timeline to understand the phases of perimenopause - Tracker to log cycle-related changes in sleep, energy, mood, and well-being
💚 Is Flo free? Flo is free to download, with all the core tools you need to plan and understand your cycle.
📚 What do I get with Flo Premium?
- Daily, tailored insights and expert-led videos - In-depth pregnancy features for every milestone and baby stage - Symptom Checker** that provides educational information on polycystic ovary syndrome, endometriosis, and uterine fibroids symptoms - Fertility 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.
Medical disclaimer Flo 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 health care professional.
Wear OS complications & tiles: Set up a tile and complication on your watch for insights about your cycle. Flo period tracker is compatible with Wear OS 3.
Download Flo today and join millions using a trusted period tracker, pregnancy app, and cycle tracker.
*Total number of users who downloaded Flo, March 2026 **Symptom Checker not available in the United Kingdom or the European Union
Privacy Policy: https://flo.health/privacy-policy Terms of Use: https://flo.health/terms-of-service
Get a detailed PDF report for Flo Ovulation & Period Tracker with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
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Comments on Flo Ovulation & Period Tracker for Android
★★★★★Danielle R· Jul 14, 2026
Have used this app twice now in successfully tracking ovulation and have had two beautiful girls with its help fingers crossed it works a third time too!
★★★★★Chiamaka Divine· Jul 9, 2026
This app has to be the best cycle tracking app I've used so far It's so accurate and breaks down my own body more than I've been taught But I think it should have an offline feature too
★★★★★Relebohile Tlali· Jul 9, 2026
Best period app I have ever used. I like the tips and also that I can manually add the date that I start even if it changes from the expected date
★★★★☆Hayley Carr· Jul 9, 2026
I love using this app to track nearly everything. Only thing I wish it took into consideration is the morning after pill or similar things. Yes, it says oral contraceptive, but I feel like that's not enough. Especially when something messes with your cycle.
★★★★★Katherine Grandelski· Jul 18, 2026
Just trying it out. I am hopeful because it seems helpful for tracking and has a lot of information readily available from reliable sourses.
★★★★★Palesa Mofokeng· Jul 24, 2026
I genuinely love this app. However why don't y'all give us an option to write about what we be going through for, and this is excluding the insights and secret chats, the options on symptoms are very limited and sometimes what I'm going through is not on the symptoms or that pop up of the app highlighting you on the symptom you just logged and talking to you about it, it gets to a point I have to lie because options are limited, and I can't write what's truly happening to me, I get inaccurate inf
★☆☆☆☆Emmi Park· Jul 14, 2026
Never not once was it correct about when my period was going to start, and you have to pay for everything else
★☆☆☆☆A. B.· Jul 24, 2026
Flo has this weird and borderline revolting obsession with forcing pregnancy and fertility content down your throat, even if you have 'Just track cycle' selected. For some reason the only type of content you can disable is se*ual content (although this setting doesn't actually work anyway), but fertility/pregnancy topics are apparently non-optional. Despite the fact that their persistent mentions can cause distress (trauma, miscarriages, tomophobia, and all sorts of reasons exist, you know).
★☆☆☆☆Lillian Grube· Jul 24, 2026
This app could be life-changing for young girls learning about their bodies and for women who were never properly taught about reproductive health. Instead, so much of that information is locked behind a paywall. Why should I have to pay to understand my own body? Basic health education shouldn't be a luxury. Everyone deserves access to knowledge about their own health, regardless of whether they can afford a subscription.
★☆☆☆☆Levi Zatmeni· Jul 24, 2026
This app has straight up deleted my data repeatedly and everything is behind a paywall.
Google Play Rankings for Flo Ovulation & Period Tracker
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