Flo Period & Cycles Tracker

Pregnancy & Ovulation Calendar

Free · In-App Purchases

270K Ratings
Ages

13+
In-App Controls
Category

Health & Fitness
Developer

FLO HEALTH UK LIMITED
Language

EN
+ 20 More
Size

253
MB

Welcome to Flo, the trusted period tracker, ovulation tracker, and pregnancy app used by millions 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 440 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 recognized 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 - Flo for Partners: Share updates like menstrual cycle predictions or pregnancy progress, and always stay in control of what you share with your partner - 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 personalized 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 Can Flo support my 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 organization 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, personalized insights What do I get with Flo Premium? - Daily, personalized 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 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, December 2025 Privacy Policy: https://flo.health/privacy-policy Terms of Use: https://flo.health/terms-of-service

Ratings & Reviews

4.7

out of 5

270K Ratings

Best Menstruation app on the market
31/07/2018

𗁧Honesty𗁧
I’d recommend this app to any menstruating female. It is an app that has many helpful features such as mood trackers and of course a period diary. It always has the ability to send notifications along with anonymous chat and many useful insights. If you're looking for a period app with mood and symptoms and how heavy your period is and how it differs this is the best one on the market right now. (But tbh I think another feature like tracking your diet and more detailed visuals and smarter assistance when logging period symptoms dates and things like that, even though that may be highly ambitious. I think the mood tracker should mirror in app purchased apps daylio as that app is great for checking your mood but important features are not free of charge, so I think if flo would allow you to log your emotions and have features such as daylio would save me alot of money. Also if it could tell me if what I’m eating would have an affect of my period or pregnancy or whatever rather than just my water intake, maybe a what did you eat tab or something I don’t really know what I’m requesting for. Also automatic sleep tracker another request/suggestion from in app purchasable apps). Overall my opinion of the app is that it is great and very very useful.

Developer Response
Hello Honesty,Thank you for sharing your positive experience! We really appreciate your feedback. 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
Best Menstruation app on the market
31/07/2018

𗁧Honesty𗁧

I’d recommend this app to any menstruating female. It is an app that has many helpful features such as mood trackers and of course a period diary. It always has the ability to send notifications along with anonymous chat and many useful insights. If you're looking for a period app with mood and symptoms and how heavy your period is and how it differs this is the best one on the market right now. (But tbh I think another feature like tracking your diet and more detailed visuals and smarter assistance when logging period symptoms dates and things like that, even though that may be highly ambitious. I think the mood tracker should mirror in app purchased apps daylio as that app is great for checking your mood but important features are not free of charge, so I think if flo would allow you to log your emotions and have features such as daylio would save me alot of money. Also if it could tell me if what I’m eating would have an affect of my period or pregnancy or whatever rather than just my water intake, maybe a what did you eat tab or something I don’t really know what I’m requesting for. Also automatic sleep tracker another request/suggestion from in app purchasable apps). Overall my opinion of the app is that it is great and very very useful.
Developer Response 20/05/2020
Hello Honesty,Thank you for sharing your positive experience! We really appreciate your feedback. 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
Be careful about payment
07/10/2018

kinkykinzy
The app itself is fine. The payment is a joke. Having read other reviews I was careful to make sure I had selected the monthly payments, however I was still charged £43 in a lump sum. Make sure you go to your subscriptions and check the monthly payment. There is no need to charge for a year with an app like this. No one wants to payout a lump sum like that, it doesn’t give you the option to cancel it then if the app doesn’t meet your needs! Or maybe that’s the point, they aren’t confident in their app, so take full payment up front expecting people to cancel. Well...I won’t be renewing next year simply because of that.UPDATE: the developer has “helpfully” told me how to cancel this subscription...which I already know how to do and have done. This was not the issue I stated. The issue I have is that, despite selecting to pay monthly, I was charged for an entire year in a lump sum. I was warning people to double check their subscriptions once they finish the free trial, as it appears selecting the monthly payment option in the app does not work. I was explaining that it was a disappointment to discover this had happened as I feel cheated out of my money, as I now have no option to cancel if after a few cycles I find the app does not meet my needs. If the app does not meet my needs, I will now be out of pocket as I will have paid for months of use that I will not be using.

Developer Response
Hi,Thank you for using Flo and contacting us!To cancel the subscription please follow the steps below:1. Launch the Settings app.2. Tap iTunes & App Store.3. Tap on your Apple ID.4. Tap View Apple ID when the pop up window appears.5. Enter your Apple ID password or fingerprint ID when prompted.6. Tap Subscriptions.7. Tap the Subscription you want to cancel.8. Tap Cancel Subscription/Trial.9. Tap Confirm when prompted to confirm that you want to cancel your subscription.This must be done 24 hours before the end of a free trial or subscription period.Best regards, Alexandra
Be careful about payment
07/10/2018

kinkykinzy

The app itself is fine. The payment is a joke. Having read other reviews I was careful to make sure I had selected the monthly payments, however I was still charged £43 in a lump sum. Make sure you go to your subscriptions and check the monthly payment. There is no need to charge for a year with an app like this. No one wants to payout a lump sum like that, it doesn’t give you the option to cancel it then if the app doesn’t meet your needs! Or maybe that’s the point, they aren’t confident in their app, so take full payment up front expecting people to cancel. Well...I won’t be renewing next year simply because of that.UPDATE: the developer has “helpfully” told me how to cancel this subscription...which I already know how to do and have done. This was not the issue I stated. The issue I have is that, despite selecting to pay monthly, I was charged for an entire year in a lump sum. I was warning people to double check their subscriptions once they finish the free trial, as it appears selecting the monthly payment option in the app does not work. I was explaining that it was a disappointment to discover this had happened as I feel cheated out of my money, as I now have no option to cancel if after a few cycles I find the app does not meet my needs. If the app does not meet my needs, I will now be out of pocket as I will have paid for months of use that I will not be using.
Developer Response 07/10/2018
Hi,Thank you for using Flo and contacting us!To cancel the subscription please follow the steps below:1. Launch the Settings app.2. Tap iTunes & App Store.3. Tap on your Apple ID.4. Tap View Apple ID when the pop up window appears.5. Enter your Apple ID password or fingerprint ID when prompted.6. Tap Subscriptions.7. Tap the Subscription you want to cancel.8. Tap Cancel Subscription/Trial.9. Tap Confirm when prompted to confirm that you want to cancel your subscription.This must be done 24 hours before the end of a free trial or subscription period.Best regards, Alexandra
Bed experience
03/11/2023

Hemit D
I have pcos problem and this app wasn’t helpful for me and The payment is a joke. Having read other reviews I was careful to make sure I had selected the monthly payments, however I was still charged £43 in a lump sum. Directly for premium membership Make sure you go to your subscriptions and check the monthly payment. There is no need to charge for a year with an app like this. No one wants to payout a lump sum like that, it doesn't give you the option to cancel it then if the app doesn't meet your needs! Or maybe that's the point, they aren't confident in their app, so take full payment up front expecting people to cancel.Well...I won't be renewing next year simply because of that.UPDATE: the developer has "helpfully" told me how to cancel this subscription...which I already know how to do and have done. This was not the issue I stated. The issue I have is that, despite selecting to pay monthly, I was charged for an entire year in a lump sum. I was warning people to double check their subscriptions once they finish the free trial, as it appears selecting the monthly payment option in the app does not work. I was explaining that it was a disappointment to discover this had happened as I feel cheated out of my money, as I now have no option to cancel if after a few cycles I find the app does not meet my needs. If the app does not meet my needs, I will now be out of pocket as I will have paid for months of use that I will not be using.

Developer Response
Hi Hemit D! Thanks for reaching out to us. Flo Premium is optional and provides access to all features of the app; however, the app’s main functions are available free of charge. Deleting the app does not cancel a subscription, unfortunately, as it is tied to your Apple ID. Because Apple protects all billing information, the only way to request a refund is to contact Apple directly. To request a refund: 1. Go to reportaproblem.apple.com. 2. Sign in with your Apple ID and password. 3. Tap or click “I’d like to.” 4. Choose “Request a refund.” 5. Choose the reason why you want a refund, then choose Next. 6. Choose Flo, then choose Submit. After that, you’ll receive an email from Apple with a decision. Let us know if you need additional guidance at [email protected] or Menu — Help — Contact us in the Flo app. Best regards, Flo Period and Ovulation tracker Support Team
Bed experience
03/11/2023

Hemit D

I have pcos problem and this app wasn’t helpful for me and The payment is a joke. Having read other reviews I was careful to make sure I had selected the monthly payments, however I was still charged £43 in a lump sum. Directly for premium membership Make sure you go to your subscriptions and check the monthly payment. There is no need to charge for a year with an app like this. No one wants to payout a lump sum like that, it doesn't give you the option to cancel it then if the app doesn't meet your needs! Or maybe that's the point, they aren't confident in their app, so take full payment up front expecting people to cancel.Well...I won't be renewing next year simply because of that.UPDATE: the developer has "helpfully" told me how to cancel this subscription...which I already know how to do and have done. This was not the issue I stated. The issue I have is that, despite selecting to pay monthly, I was charged for an entire year in a lump sum. I was warning people to double check their subscriptions once they finish the free trial, as it appears selecting the monthly payment option in the app does not work. I was explaining that it was a disappointment to discover this had happened as I feel cheated out of my money, as I now have no option to cancel if after a few cycles I find the app does not meet my needs. If the app does not meet my needs, I will now be out of pocket as I will have paid for months of use that I will not be using.
Developer Response 10/11/2023
Hi Hemit D! Thanks for reaching out to us. Flo Premium is optional and provides access to all features of the app; however, the app’s main functions are available free of charge. Deleting the app does not cancel a subscription, unfortunately, as it is tied to your Apple ID. Because Apple protects all billing information, the only way to request a refund is to contact Apple directly. To request a refund: 1. Go to reportaproblem.apple.com. 2. Sign in with your Apple ID and password. 3. Tap or click “I’d like to.” 4. Choose “Request a refund.” 5. Choose the reason why you want a refund, then choose Next. 6. Choose Flo, then choose Submit. After that, you’ll receive an email from Apple with a decision. Let us know if you need additional guidance at [email protected] or Menu — Help — Contact us in the Flo app. Best regards, Flo Period and Ovulation tracker Support Team
Better than the others out there
23/10/2017

oliviamartha
I’ve been a user of a particular period tracking app for a while now and decided to have a change after that one wasn’t really working for me how I wanted it to. I came across Flo and I wish I had been using it way before now! I love how the app responds to your symptoms and changes your predictions according to what you are experiencing at certain points in your cycle (something that was clearly missing from the other app). I haven’t been using the app for long, so I can only assume that it will get better with time/more to work from. What is great about Flo is that it makes you want to use it on a day to day basis to keep the app as accurate as possible. The only suggestion I have to improve it would to have “custom settings” where you could add your own symptoms. I know that there is currently a notes screen but it is hard to keep a track on specific individual symptoms should you record them in this way (for example leg pain). This wouldn’t have to necessarily have an impact on cycle predictions, it would just be nice to keep a track on certain symptoms that aren’t currently listed. Anyways, this app is fab and I would highly recommend it to anyone!

Developer Response
Hi oliviamartha!Thank you for your idea! Unfortunately, there is no such option at the moment, but we are constantly working on improving our app. Our team will definitely review your suggestion to determine if it's possible to implement and how to make Flo more useful to our users.Best Regards,Flo Support Team
Better than the others out there
23/10/2017

oliviamartha

I’ve been a user of a particular period tracking app for a while now and decided to have a change after that one wasn’t really working for me how I wanted it to. I came across Flo and I wish I had been using it way before now! I love how the app responds to your symptoms and changes your predictions according to what you are experiencing at certain points in your cycle (something that was clearly missing from the other app). I haven’t been using the app for long, so I can only assume that it will get better with time/more to work from. What is great about Flo is that it makes you want to use it on a day to day basis to keep the app as accurate as possible. The only suggestion I have to improve it would to have “custom settings” where you could add your own symptoms. I know that there is currently a notes screen but it is hard to keep a track on specific individual symptoms should you record them in this way (for example leg pain). This wouldn’t have to necessarily have an impact on cycle predictions, it would just be nice to keep a track on certain symptoms that aren’t currently listed. Anyways, this app is fab and I would highly recommend it to anyone!
Developer Response 20/05/2020
Hi oliviamartha!Thank you for your idea! Unfortunately, there is no such option at the moment, but we are constantly working on improving our app. Our team will definitely review your suggestion to determine if it's possible to implement and how to make Flo more useful to our users.Best Regards,Flo Support 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 9.97.1

2 days ago

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

£6.99
Ovulation Tracker

Understand your fertile days

£9.99

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