• 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
• Over 9M women got pregnant with 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

Our standard subscription options are: 1-month subscription for $9.99, 3-month subscription for $19.99, 6-month subscription for $39.99, 1-year subscription for $49.99 or equal to the same price tier as Apple App Store Matrix determines as the equivalent of subscription price in USD.

• 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 4.48

Dear Flo Community,
We’ve added several updates to make our app even better. Here’s what’s changed:
• Keep an eye out for a new course called “Your Journey to Empowerment” by Paralympic gold medalist Annabelle Williams
• Check out our improved video player that now lets you:
• Mute/unmute the sound
• Play the sound in the background (totally necessary for meditation courses)
• Launch the video by clicking any part of the preview
• Enjoy new amazing avatars and meet our newly renamed Community - Secret Chats
• And, last but not least, in response to numerous requests, we’ve made it possible to opt-out of several notifications
Always yours,
The Flo Team
P.S.: If you like our app, please don’t hesitate to rate and review us!

Ratings and Reviews

4.6 out of 5
89.4K Ratings

89.4K Ratings

polyne06 ,


Je n’arrive plus à accéder aux articles proposés en mode grossesse
Application surper mais le problème dure depuis une semaine

Developer Response ,


Veuillez nous contacter directement depuis l'application en cliquant sur Plus - Contacter le service clientèle, puis indiquez votre problème sans supprimer aucun symbole du message. Nous nous ferons un plaisir de vous répondre.

l'équipe d'assistance de Flo

sophie seux ,


J'ai découvert cette appli il y a un an... depuis elle ne me quitte plus, je note le plus régulièrement possible mes symptômes et autres et les prédictions sont efficaces... mais je ne connais pas la durée exacte de mon cycle. Flo peut-il déterminer, après quelques mois et plusieurs cycles la durée du cycle en faisant une moyenne? Si oui ce serait parfait car je pense que ça garantirait une sûreté et une prévision nécessaire. Bref à part ce détail, l'appli est géniale et très bien construite, je recommande vivement!

Developer Response ,

Hi there! Thank you for your feedback. You can log your periods for several month and then find your average cycle length calculated by the app in More - Graphs ana Reports - Cycle duration.
Best regards, Svetlana.

Clara la ,

Bonne application mais gros problème avec le mode premium

J’ai installé cette application depuis un petit moment maintenant et j’ai récemment vu il y avait également un mode premium qui était apparu qui est bien évidemment payant et non obligatoire
Flo me permets en tant que jeune femme et futur femme de pouvoir consulter certains articles et avoir une source d’information fiable et complète or certains articles sont classés en mode premium il faut donc payer pour les consulter sachant que certains parlent des maladies sexuellement Transmissibles (MST) de moyens de contraception de l’alimentation ou du sport choses qui devrait être accessible à toutes surtout pour les plus jeunes d’entre nous qui n’ont pas de rendez-vous chez un gynécologue ou ne peuvent pas poser certaines questions aux parents ou tout simplement ne font pas confiance à certains sites sur Internet
je trouve ça dommage, inacceptable et injuste dans une certaine mesure de devoir payer pour pourvoir lire certains articles qui sont très important pour certaines jeunes filles
Flo est cependant une très bonne application pour suivre son cycle mensuel elle m’a beaucoup aidé grâce à ces articles
J’espère que certains articles très importants (MST- contraception) vont rester ou redevenir accessible à tous

Developer Response ,

Hi there,

Thank you for contacting us!

Our mission has always been - and still is - to meet the needs of women of all ages and goals. However, to get more opportunities for the development of our product and to continue serving dozens of millions of women, Flo should become a sustainable business. We have a lot of ideas and the premium version is one of experiments the company is running at the moment. We are profoundly convinced that Flo must remain a free app and most its features are and will definitely be available for free. And we plan to add more free features in future. Flo Premium will focus on extra features and insights and will remain optional. Flo users will always be able to use the free version of Flo.

If you have any questions on the experiment or something makes you feel uneasy, let us know. Your feedback is a very important part of the process.

Best regards, Kate


138.6 MB
Health & Fitness

Requires iOS 11.0 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
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
In-App Purchases
  1. Flo Premium 109,99 €
  2. Period Tracker Premium 1 month 9,99 €
  3. Period Tracker Premium 3 month 20,49 €


  • Family Sharing

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

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