Flo Period Tracker & Calendar 12+

Health, Ovulation & Pregnancy


    • Free
    • Offers In-App Purchases


Discover the most popular female health and wellbeing guide chosen by 230 million women, co-created with over 100 leading medical experts and acclaimed medical institutions.

• Partner of the United Nations Population Fund in the area of reproductive health
• Over 100 doctors and experts in healthcare are part of the Flo Medical Board
• Thousands of women log pregnancies every day on Flo
• App of the Day in the AppStore in over 30 countries

No matter your stage of life or reproductive goal, personalise Flo to make it unique and relevant to you. Based on advanced AI technology, Flo helps you to monitor your cycle, fertility or pregnancy accurately. As a one-stop solution for all things female health and wellbeing, you can track all-in-one: period start date and length, fertile window, peak ovulation days, PMS symptoms, flow intensity, birth control, water intake, sleep and step counter, and much more. Follow your baby’s growth weekly during pregnancy.

Your cycle is so much more than your period. Every woman experiences different symptoms, mood swings and energy levels during each cycle phase. Together with a team of over 100 healthcare experts, Flo helps you to understand your body better. Explore accurate cycle predictions and tips on how to benefit from your cycle phase and hormone levels for clearer skin and increased energy levels.

Discover a personal journey to motherhood with Flo. Get pregnant as soon as naturally possible for you by identifying your most fertile days and receiving tailored insights. Flo’s pregnancy mode gives you access to images to follow your baby’s growth weekly. Calculate your due date, set a countdown and learn the essentials of newborn care.

Log 70+ symptoms and activities to get the most precise AI-based overview of your body’s patterns. Keep a diary of your weight, water intake, physical activity, sex drive, moods and PMS symptoms to monitor changes and receive accurate predictions. Get access to an entire health & wellbeing content library with articles, videos and surveys.

Schedule reminders for when your period is approaching, its start and end date, your ovulation day, and personalise Flo to get notifications about weight, sleep, water intake, step goal and birth control.

Get access to your monthly health report with personalised cycle graphs and indications of your body’s patterns. A virtual health dialogue will provide proactive information based on your unique profile and symptoms.

Safely discuss intimate topics, ask questions anonymously and get support from one of the largest female communities worldwide.

Flo uses HealthKit to export your Flo activities to the Health app and to read menstrual cycle data.

Flo offers a subscription plan that gives you a more personalised experience and unlimited access to the entire health and wellbeing content library

• Payment will be charged to iTunes Account at confirmation of purchase
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
• Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

For more information please visit the link https://support.apple.com/en-us/HT202039
Privacy Policy: https://flo.health/privacy-policy
Terms of Use: https://flo.health/terms-of-use
Accessibility Statement: https://flo.health/accessibility-statement-ios

Flo’s predictions should not be used as a form of birth control/contraception.


What’s New

Version 9.1

Update your app and look further ahead in your cycle so you can be prepared to take on anything. Learn how you may feel in your next cycle with daily forecasts. Sync your life and your cycle so you can plan well, feel well and live well.

Future Cycle Days
Understand where you'll be in your cycle on a date in the future and what that means for how you'll feel. Want to know when to seize the day? Or when to plan for self-care? Leverage your life moments around hormone highs and lows.

Future Symptoms
Slide into your future feelings with a breakdown of symptoms that you may experience throughout your next cycle. Get ahead with expert insights on how to prepare for your future symptoms thanks to articles and videos.

Future Discharge
Know what discharge to expect on future days and what this can tell you about your cycle health.

Chances of getting pregnant
Get day-by-day forecasts of your fertility levels for this cycle and the next, knowing when you will have higher chances of getting pregnant. And, if you're planning for pregnancy, get tips on optimizing your life for conception.

The Flo Team

P.S. If you like Flo, please consider rating the app and leaving a review. Ratings and reviews help us support more people like you.

Flo is not a method of contraception.

Ratings and Reviews

4.7 out of 5
127.4K Ratings

127.4K Ratings

𗁧Honesty𗁧 ,

Best Menstruation app on the market

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

kinkykinzy ,

Be careful about payment

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 ,

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

MiniSmurfy ,

Initially great but starting to feel a little let down

When I first downloaded the app it was great, and the tracking part remains so. I do not pay for the subscription for various reasons but I found I had enough info on the app to be satisfied with the free version. However I’ve noticed that with the last few updates, the content you receive is less and less to the point where all you can do is track your period/pregnancy. There’s barely any point to tracking symptoms anymore as every article is available to subscription users only, where previously you could get something and then get more info if you subscribe. Now I understand some will say ‘just pay for it’ or ‘what do you expect for free’ which I get, but it’s frustrating when the app initially offered more for free and has been reducing content which I personally think is poor taste. I understand that they are a business, and it’s in their interest to make money, but this just feels like they are using this to force people into paying. If you’re happy not to receive insights in the free version then it’s perfect and still does an excellent job at tracking. If you’re irregular like me, within a few months of tracking, the app will almost have it down to the day perfectly.

Developer Response ,

Hi MiniSmurfy,

Thank you for reaching out. In an effort to create long term value for our users, we recently moved some features from the free plan to the Premium plan. The reason for this is 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. Our basic period tracker will remain free for everyone, and this will never change.

While we started out as a period tracker, we’ve since expanded our vision to become an all-in-one deeply personalized, holistic health and wellbeing platform. This evolution has naturally required our team to bring on additional clinical experts and staff,We now have over 80 medical and health experts from medical schools and universities who make sure all of our content 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.practices.

We encourage you to check out Flo Premium. Each day, you’ll find personalized tips based on your unique cycle phase and hormone levels. Our Insights section also offers a robust, searchable library of multimedia health and well-being content. Here at Flo, 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 Support Team


Flo: Cycle Tracker
Connect your life & your period with Premium
Free Trial
Flo Pregnancy Tracker
Flo Pregnancy Tracker
Free Trial
Fertility Tracker Flo Premium
Your fertility friend to help you conceive

App Privacy

The developer, FLO HEALTH, INC., 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 on, for example, the features you use or your age. Learn More

You Might Also Like

Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness