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 recognized as the gold standard in data protection and security. In 2025, Flo Health was recognized 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 personalized menstrual cycle insights
- Support for irregular periods, pre-period symptoms, and cycle changes
- 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 recognize 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
- Symptom Checker** that provides educational information on polyendocrine metabolic ovarian syndrome, endometriosis, and uterine fibroids symptoms
- 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
**Not available in the UK, EU, Iceland, Liechtenstein, Norway, or Switzerland.
Privacy Policy: https://flo.health/privacy-policy
Terms of Use: https://flo.health/terms-of-service
I used to love flo. I’ve been using the app since my junior year of high school (I’m now a senior in college). I appreciate how I’ve been able to track my period through the years, as it’s been enormously helpful to my overall health, well-being, and awareness of my body. That being said, I have really struggled with the new updates that flo has undergone. Not only has the app become significantly less user-friendly, but the constant push to “go premium” has really negatively impacted my experience. I understand why they have a premium option, and I respect that it is there, but what I don’t respect is how I’m constantly being mislead in order to be trapped into signing up for a premium subscription. I find it really irresponsible that women who don’t want to pay for this app, will be given insights about their menstrual health, only to find out that they can’t have access to the information behave they don’t have an account! I used the chat feature a few times before, and it’ll leave me responding to chats for about 5 minutes, and right before they give me an answer about my health, they say I need to subscribe! It’s honestly cruel that an app meant to help women feel more secure about their health, is constantly misleading them like this, or trying to buy their desire for basic health info! Most of which can be googled, btw. I’ve really loved using flo, but am honestly considering shifting gears if things don’t change soon.
Developer Response
Hi mallalalalalalalalala,Thank you for sharing this. We’re sorry to hear you’re disappointed that we moved some features out of the free plan. Premium subscriptions fund the ongoing development of the app, while keeping the basics free for everyone. We welcome your feedback. Please email us at support@flo.health.Kind Regards,Flo Support Team
Above just a period app
Amanda_bubble
I used this app for a couple years to track my period and symptoms every month. (Like most). And I found it very useful to see symptoms that I would get routinely every month, especially since I wasn’t always exactly on schedule. At the time I always had my period every month and from my knowledge I thought it was normal the cycle lengths I had. But after two years Flo popped up with a notification letting me know “Your symptoms match up with people who have PCOS and thought was aren’t drs. We think you should ask or bring it up to your OBGYN.” My phone died right after and when I would try to look it up later I constantly ran in to pms. Acouple years pass and I out of the blood skip my period for three months with no pregnancy but period pains with no blood. I call my obgyn and they tell me. “We think you have pcos, we are gonna do blood work to make sure but we are pretty certain” blood work came back and I was diagnosed with polycystic ovary syndrome. Which was a relief and yet scary all at the same time. But it made me think back to when the Flo app sent me that message years prior, telling me to chat with my dr. I really appreciate this app and the developers for recognizing that pcos is a thing and people can go through life not every knowing or being diagnosed. So I told my dr about how my period tracker on my phone recommended I chat with them about it. So if you had any thoughts on why this app is so useful and above the rest. This is why it meant so much to me!
Developer Response
Hi Amanda!We really appreciate your feedback! We’re so glad that you like using our app! We’re constantly working on improving Flo, and we hope that we can make it even more useful and interesting for you in the future.Kind regards,Flo Support Team
Deleting the App
genuine_feedback!
Gave a 5 star so this will be seen.I have been using this app for well over 5 years, it used to be so great and user friendly. And I really appreciated being able to track my cycle and have insight as to what I was going through, all the way up to when I got pregnant early last year with my daughter. & then the app didn’t really have much to offer compared to other apps as far as tracking my pregnancy. I redownloaded the app once I started having periods again postpartum and every so many minutes within using the app, it prompts me to purchase the full subscription to be able to use even basic features that used to be available to everyone without purchase. In addition, when it prompts you to make a purchase, it literally forces you to agree and continue into the purchase by not allowing an exit button or anything to back out of the ad until you’re having to deny the purchase when it tries to ask for a payment method. It’s ridiculous that they are so money hungry that they now feel the need to try to force you into a purchase. It will also offer insight on your cycle but then pop up with an ad that you need to make a purchase to even see the insight. Other than being able to enter when you have your period and look back on the calendar, it is now a pointless app, I can literally use the calendar on my phone to do the same thing.
Developer Response
Hi there! We’re sorry if you found our promotion of Flo Premium a bit pushy! We’ve been working hard to develop our product so that it’s helpful on your journey to becoming healthier every day. While we would be pleased to have you try Flo Premium, we value all of our users, whether they subscribe or decide to use the free version. We’re very sorry for your experience. Could you please contact us at support@flo.health and let us know what you would like to change? Our team will be happy to assist you! Kind Regards, Flo Team
It’s helped me so much
Jessiewad
I love this app. I’ve had it ever since I’ve started my period, and it’s amazing. It’s accurate and even tho sometimes I’m a little late or early I don’t mind it because it gives me a general time and I’m not guessing like my other peers. I also could be getting more accurate if I logged in my symptoms everyday, something that IVE SEEN make it extremely accurate. Flo gives you articles after you’ve logged symptoms as well to try and help you, something I adore. These articles have been great to explore and for me to see what’s going on with my body. Flo’s community is amazing too!! All the girls are extremely respectful and helpful and is only trying to make another person feel more comfortable. They have a community part where you can anonymously chat with other girls, and you get notifications on the app when someone replies, something that’s an added feature, and I love it. Something else, that’s an amazing part of Flo, is that they have a lock on the app too, if you choose. A lot of friends like to go on my phone, and I would rather not let them see my period tracker. Flo sends reminders when your period is on your way too! And if you have a certain goal like getting pregnant, Flo with gladly help. (Something I haven’t explored quite yet based on my age.) There are indeed small cons, like some of the articles you have to get Flo Premium, and all the courses, you just pay, but those are only optional things, and I’m just fine without them. So, if you’re wondering, get Flo!
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 10.8.0
Subscriptions
Flo Menstrual Cycle Tracker
Your personal period calendar & symptom diary
Free Trial
Flo Pregnancy Tracker
Track your baby's growth with Flo Premium
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
Free Trial
Ovulation Tracker
Understand your fertile days
$9.99
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, for example, based 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
