• The most downloaded Health & Fitness app in App Store worldwide (August 2019)
• App of the Day in App Store in over 30 countries
• Partner of United Nations Population Fund in the area of reproductive health
• 10M women got pregnant using Flo
• Featured in Vogue, Glamour, Women’s Health, Refinery29, Cosmopolitan, Elle, Wall Street Journal, TechCrunch, Venture Beat, MTV, The Guardian and more

Flo Period Tracker, Ovulation & Fertility Calendar! It’s a smart and simple female period tracker, helpful pregnancy week by week app, accurate ovulation and fertility calendar and PMS symptoms tracker for women all over the world. Flo Period Tracker not only tracks your period accurately, but it’s also a reliable pregnancy calculator, ovulation calendar, and true fertility friend for you. It’s the first period app, pregnancy calculator, fertility and ovulation calendar for women that uses machine learning (AI). All women, even those with irregular periods, can rely on this health tracker. Log your menstruation days in a handy period calendar, ovulation and fertility tracker, schedule menstrual cycle reminders, record moods and PMS symptoms, use a due date calculator, follow a pregnancy calendar and take full control of your health.
Want to know when your next period is coming? Confused by PMS symptoms? Want to take your birth control pills in time? With Flo female period tracker, ovulation and fertility calendar it’s easy to keep track of your menstrual cycle.


• Track your cycle, period and PMS
• Log the start date, the end date of menstruation and fertile days
• Follow days favorable for conception in the fertility calendar
• Get predictions for upcoming periods, ovulation and fertility
• Log more symptoms to get improved predictions if you have irregular periods


• See countdown to the birth of the baby
• Track the week of pregnancy
• Get interesting articles on pregnancy


• Keep your cycle, ovulation, fertility and symptoms history
• Analyze your cycle and period duration, weight changes and activity during the cycle
• See the graph of your BBT and ovulation


• Find out more about your body, cycle, ovulation and fertility
• Get daily health insights based on your data
• Import your data from Fitbit and Health App


Want more from Flo? Get Flo Premium and enjoy:
• Personalized Insights Based on Your Symptoms and Cycle Phase
• Detecting Physical and Emotional Patterns
• Health Report for Doctor

• 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
Privacy Policy:
Terms of Use:

Download this period diary and join millions of women who trust their cycles to Flo Period & Ovulation Tracker & Fertility Calendar

What’s New

Version 4.65

Thanks for using Flo, our update contains some technical improvements to enhance your app experience.
Please also have a look at our #Whileathome series. As many of us are still spending lots of time at home, we have put together a series of cards that may help you to stay positive, grounded, and motivated over the next few weeks. Learn more about your body, develop healthy new habits, speak your mind, and nurture your mental wellbeing. All of this and more is available in our app.
Thank you for updating, and take care,
The Flo Team
P.S.: If you like Flo, please consider rating the app and leaving a review. Ratings and reviews help us help more women.

Ratings and Reviews

4.5 out of 5
4K Ratings

4K Ratings

Mulle1983 ,

Rigtig glad for app’en

Jeg finder det problematisk, at Flo fx. forudsiger min ægløsning til d. 27/12.
Den 27/12 indtaster jeg, at jeg har en negativ ægløsningstest. På trods af det fastholder Flo at jeg har ægløsning der, hvilket jo selvsagt ikke er tilfældet.

Måske dette kunne tænkes ind i fremtidig opdatering. Ellers er jeg nemlig rigtig glad for app’en.

Developer Response ,

Hi Mulle1983,

We appreciate your feedback! If you’d like, we'd be happy to assist you. Please tap "Contact Support" from the app menu or reach out to Hope this helps!

Best regards,
Flo Support Team

Emfri ,


Jeg er ret utilfreds med at flo, af sig selv, besluttede sig for at jeg ikke længere er gravid, og jeg af en eller anden grund ikke kan få den til at ændre mening! Jeg er stadig gravid!!

Developer Response ,

Hi Emfri,

We’re very sorry for your experience. It would mean a lot to us if you could contact us and let us know what you would like to change. Our team will be happy to assist you! We aim to take care about our users.

Kind Regards,
Flo Support Team

Layla.d.M ,

Super gode

Meget glad for appen😍

Developer Response ,

Hi Layla.d.M,

Thank you for your kind feedback! We’re really happy you like our app and we're constantly working on improving the app and hope that we can make it even more useful to you in the future.

Kind regards,
Flo Support Team


Flo Wellbeing & Period Tracker
Personalized predictions, insights & no ads
Free Trial


179.2 MB

Requires iOS 11.0 and watchOS 2.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Danish, Finnish, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese

Age Rating
Infrequent/Mild Medical/Treatment Information
In-App Purchases
  1. Flo Premium 849,00 kr
  2. Period Tracker Premium 1 month 79,00 kr
  3. Period Tracker Premium 3 month 159,00 kr


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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