Flo: Period & Cycle Health

Name: Flo: Period & Cycle Health
Rating: 4.6 (21434 reviews)
Author: FLO HEALTH UK LIMITED

Ovulation & Pregnancy Tracker

Free · In-App Purchases

21K Ratings
Age Rating

13+
In-App Controls
Chart

No. 10
Health & Fitness
Developer

FLO HEALTH UK LIMITED
Language

EN
+ 20 More
Size

347.7
MB

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 - 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 - 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

Events

MAJOR UPDATE
Flori: Decode how you feel

Flori helps you track your sleep, cycle symptoms, and energy so you can understand what your body might need.

Ratings & Reviews

4.6

out of 5

21K Ratings

Great app but I’m confused
19/01/2024
Georgia Gick
I’ve had flo for a few years now and I really like it! It’s great for me as I have very irregular periods and it really helps me to stay on track and learn more about my periods. I am slightly confused though because a couple months ago, I got a pop up on the app that told me since I have been a loyal premium member for a number of years, my premium subscription will now be free forever. But I still keep getting pop ups telling me that I need to renew my subscription? I’m very confused as I was paying $27 a year but then told it was going to be free and now the app is telling me I have to pay $25 every 6 months?? What is going on? I live in New Zealand so the amount I pay could differ to others.

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
Great app but I’m confused
19/01/2024
Georgia Gick

I’ve had flo for a few years now and I really like it! It’s great for me as I have very irregular periods and it really helps me to stay on track and learn more about my periods. I am slightly confused though because a couple months ago, I got a pop up on the app that told me since I have been a loyal premium member for a number of years, my premium subscription will now be free forever. But I still keep getting pop ups telling me that I need to renew my subscription? I’m very confused as I was paying $27 a year but then told it was going to be free and now the app is telling me I have to pay $25 every 6 months?? What is going on? I live in New Zealand so the amount I pay could differ to others.
Developer Response 23/01/2024
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
Annoying ads and Manipulation to get Premium Subscribers
08/05/2025
FrancescaPope
Had this app for about 3-4 years and generally found it fine. I obviously found the ads annoying but I just ignored them and find that if you don’t click on anything except log period then you don’t really run into them. However, today my experience led me to uninstall the app. I got a pop up that there is a symptom they have detected which may imply I could have PCOS. I clicked on it to do some further investigation but not overly concerned. Tried to find out what this symptom was and how to analyse if I have symptoms attributed with the disease as per what the app suggested I could, only to find I needed to pay for premium to find out this information which I honestly find really low. Using women’s and YOUNG GIRL’S fear of their own reproductive health to entrap them into giving the app money is downright scummy. I understand premium funds the app and these suggestions which are optional can only be accessed via premium which is fine if you ignore them. However, using fear and concern for health to get someone to give you money for something they can find for free on the internet or discuss with a real doctor is low. I am not the only one who’s had this experience which is why I worry for the young girls or other women who trust the app and it’s advice since it has their cycle data who are likely to pay for this advice which is in no way necessary. The suggestion from the app should be “here is the symptom we found due to this reason, we suggest contacting a medical professional or doing your own research on the matter”. I’d prefer to download an app founded by women who are actually out to help other women not just gouge from them.

Developer Response
Hi there! Thank you for sharing your feedback about Flo. In this latest version, we updated our algorithms to make Flo’s predictions even more accurate and useful, and we enhanced personalization options for Flo users. We also moved some features from the free plan to the Premium plan, which is why you may have seen paywalls prompting you to subscribe to our Premium plan to access certain types of content. Even with this change, the core features of our app (cycle tracking and prediction) remain free for everyone. We believe cycle tracking should be available to everyone who needs it, regardless of ability to pay. For users who are interested in our more advanced options, the funds we receive from our Premium subscribers enable the ongoing development of the app, and help keep the basics free for everyone. While some apps push ads and sell user data to make money, we are committed to remaining ad-free and keeping our user data safe, secure, and protected at all costs. Thanks to our subscription-based model, none of our users see annoying ads, and your data is safe and secure — regardless of whether or not you’re a subscriber. While we started out as a period tracker, we’ve since expanded our vision to become an all-in-one deeply personalized, holistic women’s health and wellbeing platform. We now have a team of over 450 passionate, dedicated employees and over 120 medical and health experts from medical schools and hospitals who make sure all the content in the app is medically credible and evidence-based. Our product managers and engineers work diligently to create a deeply personalized experience for our users and ensure that Flo is tailored to your needs, goals, and symptoms. Lastly, and most importantly, our data and security team implements best-in-class data security standards. We encourage you to check out Flo Premium. Each day, you’ll find personalized actionable tips based on your unique cycle phase and changes in hormone levels. Our Insights section also offers a robust, searchable library of multimedia health and well-being content We aim to take female health to an entirely new level and hope to make our app even more useful and supportive for you. If you have any other questions, please reach out at support@flo.health. Your feedback is truly valuable, and it helps us improve the app for you and for many others around the world. Kind Regards, Flo Team
Annoying ads and Manipulation to get Premium Subscribers
08/05/2025
FrancescaPope

Had this app for about 3-4 years and generally found it fine. I obviously found the ads annoying but I just ignored them and find that if you don’t click on anything except log period then you don’t really run into them. However, today my experience led me to uninstall the app. I got a pop up that there is a symptom they have detected which may imply I could have PCOS. I clicked on it to do some further investigation but not overly concerned. Tried to find out what this symptom was and how to analyse if I have symptoms attributed with the disease as per what the app suggested I could, only to find I needed to pay for premium to find out this information which I honestly find really low. Using women’s and YOUNG GIRL’S fear of their own reproductive health to entrap them into giving the app money is downright scummy. I understand premium funds the app and these suggestions which are optional can only be accessed via premium which is fine if you ignore them. However, using fear and concern for health to get someone to give you money for something they can find for free on the internet or discuss with a real doctor is low. I am not the only one who’s had this experience which is why I worry for the young girls or other women who trust the app and it’s advice since it has their cycle data who are likely to pay for this advice which is in no way necessary. The suggestion from the app should be “here is the symptom we found due to this reason, we suggest contacting a medical professional or doing your own research on the matter”. I’d prefer to download an app founded by women who are actually out to help other women not just gouge from them.
Developer Response 09/05/2025
Hi there! Thank you for sharing your feedback about Flo. In this latest version, we updated our algorithms to make Flo’s predictions even more accurate and useful, and we enhanced personalization options for Flo users. We also moved some features from the free plan to the Premium plan, which is why you may have seen paywalls prompting you to subscribe to our Premium plan to access certain types of content. Even with this change, the core features of our app (cycle tracking and prediction) remain free for everyone. We believe cycle tracking should be available to everyone who needs it, regardless of ability to pay. For users who are interested in our more advanced options, the funds we receive from our Premium subscribers enable the ongoing development of the app, and help keep the basics free for everyone. While some apps push ads and sell user data to make money, we are committed to remaining ad-free and keeping our user data safe, secure, and protected at all costs. Thanks to our subscription-based model, none of our users see annoying ads, and your data is safe and secure — regardless of whether or not you’re a subscriber. While we started out as a period tracker, we’ve since expanded our vision to become an all-in-one deeply personalized, holistic women’s health and wellbeing platform. We now have a team of over 450 passionate, dedicated employees and over 120 medical and health experts from medical schools and hospitals who make sure all the content in the app is medically credible and evidence-based. Our product managers and engineers work diligently to create a deeply personalized experience for our users and ensure that Flo is tailored to your needs, goals, and symptoms. Lastly, and most importantly, our data and security team implements best-in-class data security standards. We encourage you to check out Flo Premium. Each day, you’ll find personalized actionable tips based on your unique cycle phase and changes in hormone levels. Our Insights section also offers a robust, searchable library of multimedia health and well-being content We aim to take female health to an entirely new level and hope to make our app even more useful and supportive for you. If you have any other questions, please reach out at support@flo.health. Your feedback is truly valuable, and it helps us improve the app for you and for many others around the world. Kind Regards, Flo Team
On the nose about all the wrong things
21/01/2024
EjPh88
I used Flo a few years back and it was really good just as a very simply period tracker. I downloaded it again about middle of last year and paid for premium as I started having issues with my cycle and contraceptive, and very quickly I started noticing the notifications were very bang on, even though I hadn’t even been tracking for two months. Then when I had a conversation with my doctor and progesterone was briefly mentioned, I had a notification shortly after mentioning progesterone levels. Another example was when I woke up one morning and had a terrible nights sleep, which was due to discontinuing a mediation, I mentioned it to my Dad and sure enough had a notification very quickly saying something along the lines of ‘Bad nights sleep? Here’s why’. And sure enough the pattern continued, even after I stopped using the app because of it. I’m sure it’s a very thorough and well-thought out app but the possibility of it making predictions and suggesting articles based on conversations I had had relating to something completely other than my period, was concerning enough to unsubscribe… $70 later.

Developer Response
Hi EjPh88! Your privacy is our priority. Please, see more here: https://flo.health/privacy-portal/femtech-and-data-privacy We’re the first and only period tracker dual-certified in ISO Security & Privacy, meeting GDPR standards. With admirable women in our leadership and diverse input from all genders, we’re focused on building a better future. Yours, Flo
On the nose about all the wrong things
21/01/2024
EjPh88

I used Flo a few years back and it was really good just as a very simply period tracker. I downloaded it again about middle of last year and paid for premium as I started having issues with my cycle and contraceptive, and very quickly I started noticing the notifications were very bang on, even though I hadn’t even been tracking for two months. Then when I had a conversation with my doctor and progesterone was briefly mentioned, I had a notification shortly after mentioning progesterone levels. Another example was when I woke up one morning and had a terrible nights sleep, which was due to discontinuing a mediation, I mentioned it to my Dad and sure enough had a notification very quickly saying something along the lines of ‘Bad nights sleep? Here’s why’. And sure enough the pattern continued, even after I stopped using the app because of it. I’m sure it’s a very thorough and well-thought out app but the possibility of it making predictions and suggesting articles based on conversations I had had relating to something completely other than my period, was concerning enough to unsubscribe… $70 later.
Developer Response 01/07/2025
Hi EjPh88! Your privacy is our priority. Please, see more here: https://flo.health/privacy-portal/femtech-and-data-privacy We’re the first and only period tracker dual-certified in ISO Security & Privacy, meeting GDPR standards. With admirable women in our leadership and diverse input from all genders, we’re focused on building a better future. Yours, Flo
Great app! Recommend, but may need a little touch up
30/08/2023
JArtGirly
I have been using this app for the last 1-2 years and have recently in the last 11 months have gone on the contraceptive, the rod. This app has been really helpful to put in all my notes and symptoms about my cycle through the years. It is also very easy to use and be able to see all the information I’ve put in. Have recommend to my friends that they should use this app, many have. Just as some feedback, it does not allow me to put into my information that I have gone on the rod. I would recommend putting a feature in where people are able to put in other types of contraceptive and not just the pill, as the rod completely up ended my period cycle. I think it would be helpful for the app to at least know why I have a completely irregular cycle and that I am not pregnant.

Developer Response
Hi JArtGirly!Thank you for choosing Flo! The app will know which contraception you use after you set reminders for it. This can be done via Menu - Reminders - Contraception (on) - Type - Select the type you use.Kind regards,Flo Team
Great app! Recommend, but may need a little touch up
30/08/2023
JArtGirly

I have been using this app for the last 1-2 years and have recently in the last 11 months have gone on the contraceptive, the rod. This app has been really helpful to put in all my notes and symptoms about my cycle through the years. It is also very easy to use and be able to see all the information I’ve put in. Have recommend to my friends that they should use this app, many have. Just as some feedback, it does not allow me to put into my information that I have gone on the rod. I would recommend putting a feature in where people are able to put in other types of contraceptive and not just the pill, as the rod completely up ended my period cycle. I think it would be helpful for the app to at least know why I have a completely irregular cycle and that I am not pregnant.
Developer Response 08/09/2023
Hi JArtGirly!Thank you for choosing Flo! The app will know which contraception you use after you set reminders for it. This can be done via Menu - Reminders - Contraception (on) - Type - Select the type you use.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 10.9.1 6 days ago

Subscriptions

Flo: Ovulation Tracker Premium

Connect your life & your period with Premium

Free Trial
Flo Pregnancy Calendar

Track your baby's growth with 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

$21.99
Ovulation Tracker

Understand your fertile days

$19.49

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

Information

Seller: FLO HEALTH UK LIMITED
Size: 347.7 MB
Category: Health & Fitness
Compatibility: Requires iOS 17.0 or later.

iPhone
Requires iOS 17.0 or later.

Apple Vision
Requires visionOS 1.0 or later.

Apple Watch
Requires watchOS 10.0 or later.
Languages: English and 20 more

English, Danish, Finnish, French, German, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Classification: 13+

13+

This app is rated 13+ with content restrictions.

Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls.
Learn More

In-App Controls
Age Assurance

Infrequent
Medical Treatment Information

Contains
User-Generated Content
Health or Wellness Topics
In-App Purchases: Yes

Flo Premium $99.99

Flo Premium $19.99

Flo Premium $3.99

Flo Premium $27.49

Flo Premium $87.90

Flo Premium $13.99

Flo Premium $13.99

Flo Birth Control Reminder $87.90

Flo Pregnancy Calendar $99.99

Flo Premium $33.49

Learn More

Developer Website

Privacy Policy

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Flo: Period & Cycle Health

Events

Flori: Decode how you feel

Ratings & Reviews

Great app but I’m confused

Annoying ads and Manipulation to get Premium Subscribers

On the nose about all the wrong things

Great app! Recommend, but may need a little touch up

What’s New

Subscriptions

Flo: Ovulation Tracker Premium

Flo Pregnancy Calendar

Flo Birth Control Reminder

Flo Women's Health & Wellbeing

Ovulation Tracker

App Privacy

Data Used to Track You

Data Linked to You

Accessibility

Information

Featured In

OUR FAVOURITES

iPhone essentials

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