Flo is a science-backed period tracker, ovulation tracker, fertility, and pregnancy app used by over 460 million* women 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 460 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 recognised 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
- 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 personalised 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 (Flo is not a method of birth control)
Can Flo support my Trying To Conceive (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 organisation 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, personalised insights
What do I get with Flo Premium?
Unlock deeper, personalised insights and advanced tracking tools with Flo Premium.
- Daily, personalised 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 for educational support
- Flo for Partners: Share updates like menstrual cycle predictions or pregnancy progress, and always stay in control of what you share with your partner
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, March 2026
Privacy Policy: https://flo.health/privacy-policy
Terms of Use: https://flo.health/terms-of-service
Olá, IsabellaMartins2,Agradecemos imensamente por seus comentários! Ficamos muito satisfeitos em saber que você gosta de usar o Flo. Se precisar de qualquer ajuda, entre em contato conosco.Atenciosamente,Equipe de Suporte do Flo
Bom
Iasmin JVG
Gosto muito do aplicativo, me da previsões maravilhosas e auxilia muito no controle! Só uma questão, sou deficiente visual e utilizo o leitor de tela para celular (voice over) E a maioria dos botões que tem no aplicativo ele não le a que se refere, para registrar um sintoma preciso contar os botões para registrar. Se os botões já falassem o que eles significavam me ajudaria bastante; e os artigos quando clico para abrir luz não sei se por causa do leitor eles não abrem, se tiro o leitor de tela e peço para alguém clicar na matéria que quero ler, aí ele abre, outra coisa interessante para verificar o que acontece! No mais, o aplicativo é ótimo! Abraços!
Developer Response
Olá, Iasmin JVG!São comentários como os seus que nos ajudam a continuar aprimorando o aplicativo. Obrigada! Vamos incluir sua sugestão na lista de solicitações de recursos que nossa equipe de produtos está sempre verificando. Atenciosamente, Equipe do Flo
O meu não está funcionando direito.
vivil2002
Já tem muito tempo que uso, e uns meses pra cá, o meu não mostra mais o período fértil. E gostaria que resolvesse isso.
Developer Response
Hi there,The ovulation and fertile day prediction disappear if you start tracking oral contraceptives. This is because they suppress ovulation process.If this is not the case, please use the app to contact us (More - Contact Support) and send us a screenshot of a month in the Flo calendar and a reminder page.Best regards,Flo Support Team
Bom
Hortivel
Poderia ter mais opções de sintomas físicos e psicológicos
Developer Response
Olá, Hortivel!Agradecemos por sua ideia! Infelizmente não temos essa opção no momento, mas estamos sempre trabalhando para melhorar nosso aplicativo. Com certeza avaliaremos a possibilidade de implementar sua sugestão e se ela torna o Flo mais útil para nossas usuárias.Atenciosamente,Equipe de Suporte do Flo
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 10.2.0
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
R$ 15,99
Ovulation Tracker
Understand your fertile days
R$ 19,99
The developer, FLO HEALTH UK LIMITED, 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, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
From the Developer: This app has content restrictions. Some content may have a higher age rating, but access to it is managed by the developer through in-app controls.
In-App Controls Age Assurance
Infrequent Medical Treatment Information
Contains User-Generated Content Health or Wellness Topics
