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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

Live in sync with your cycle using Flo, the world’s most popular female health app. Get personalised insights and predictions on your body.

Whether you want to predict your period, get pregnant, track your pregnancy, or better understand your symptoms, Flo is your all-in-one female health partner. Join over 430 million members.

With Flo, you can:
- Keep your data safe: Flo is the first period and ovulation tracker to achieve dual ISO 27001 and ISO 27701 Certifications (aka gold standards in data protection).
- Feel more understood: Share your Flo insights via Flo for Partners to feel more connected, understood, and supported.
- Get an extra layer of protection: Anonymous Mode means no one, not even Flo, can identify you based on your health data.
- Join a supportive community: Secret Chats is where members can discuss topics and connect with others on the same journey.
- Access reliable health information: Flo collaborates with a globally recognised organisation dedicated to reproductive health and rights, ensuring trustworthy support for your health journey.

With Flo Premium, you can enjoy:
- Monthly cycle reports
- Symptom predictions and patterns
- Tailored prediction insights
- Detailed pregnancy tracking
- Full access to Flo for Partners
- A 24/7 virtual Health Assistant
- All articles, videos, and courses reviewed by 140+ health experts

New! Flo supports perimenopause:
- Know what might be perimenopause and how to tune in to your body’s changes.
- Get clarity on common perimenopause symptoms and what can help.
- Make more informed health decisions and identify what you need to feel your best.

Start tracking your cycle for free today.

Privacy Policy and Terms of Use:
https://flo.health/privacy-policy
https://flo.health/terms-of-use

Connect with Flo:
Web: flo.health
TikTok: @flotracker
Instagram: @flotracker

Please note: Flo is not a diagnostic tool and should not be used as a method of contraception or to facilitate conception. Predictions and insights provided by the app are intended for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for any health concerns or decisions.

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

If you have any difficulties using the app, contact Flo via support@flo.health.

Live in sync with your cycle using Flo, the world’s most popular female health app. Get personalised insights and predictions on your body.

Whether you want to predict your period, get pregnant, track your pregnancy, or better understand your symptoms, Flo is your all-in-one female health partner. Join over 430 million members.

With Flo, you can:
- Keep your data safe: Flo is the first period and ovulation tracker to achieve dual ISO 27001 and ISO 27701 Certifications (aka gold standards in data protection).
- Feel more understood: Share your Flo insights via Flo for Partners to feel more connected, understood, and supported.
- Get an extra layer of protection: Anonymous Mode means no one, not even Flo, can identify you based on your health data.
- Join a supportive community: Secret Chats is where members can discuss topics and connect with others on the same journey.
- Access reliable health information: Flo collaborates with a globally recognised organisation dedicated to reproductive health and rights, ensuring trustworthy support for your health journey.

With Flo Premium, you can enjoy:
- Monthly cycle reports
- Symptom predictions and patterns
- Tailored prediction insights
- Detailed pregnancy tracking
- Full access to Flo for Partners
- A 24/7 virtual Health Assistant
- All articles, videos, and courses reviewed by 140+ health experts

New! Flo supports perimenopause:
- Know what might be perimenopause and how to tune in to your body’s changes.
- Get clarity on common perimenopause symptoms and what can help.
- Make more informed health decisions and identify what you need to feel your best.

Start tracking your cycle for free today.

Privacy Policy and Terms of Use:
https://flo.health/privacy-policy
https://flo.health/terms-of-use

Connect with Flo:
Web: flo.health
TikTok: @flotracker
Instagram: @flotracker

Please note: Flo is not a diagnostic tool and should not be used as a method of contraception or to facilitate conception. Predictions and insights provided by the app are intended for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for any health concerns or decisions.

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

If you have any difficulties using the app, contact Flo via support@flo.health.

Live in sync with your cycle using Flo, the world’s most popular female health app. Get personalised insights and predictions on your body.

Whether you want to predict your period, get pregnant, track your pregnancy, or better understand your symptoms, Flo is your all-in-one female health partner. Join over 420 million members.

With Flo, you can:
- Keep your data safe: Flo is the first period and ovulation tracker to achieve dual ISO 27001 and ISO 27701 Certifications (aka gold standards in data protection).
- Feel more understood: Share your Flo insights via Flo for Partners to feel more connected, understood, and supported.
- Get an extra layer of protection: Anonymous Mode means no one, not even Flo, can identify you based on your health data.
- Join a supportive community: Secret Chats is where members can discuss topics and connect with others on the same journey.
- Access reliable health information: Flo collaborates with a globally recognised organisation dedicated to reproductive health and rights, ensuring trustworthy support for your health journey.

With Flo Premium, you can enjoy:
- Monthly cycle reports
- Symptom predictions and patterns
- Tailored prediction insights
- Detailed pregnancy tracking
- Full access to Flo for Partners
- A 24/7 virtual Health Assistant
- All articles, videos, and courses reviewed by 140+ health experts

New! Flo supports perimenopause:
- Know what might be perimenopause and how to tune in to your body’s changes.
- Get clarity on common perimenopause symptoms and what can help.
- Make more informed health decisions and identify what you need to feel your best.

Start tracking your cycle for free today.

Privacy Policy and Terms of Use:
https://flo.health/privacy-policy
https://flo.health/terms-of-use

Connect with Flo:
Web: flo.health
TikTok: @flotracker
Instagram: @flotracker

Please note: Flo is not a diagnostic tool and should not be used as a method of contraception or to facilitate conception. Predictions and insights provided by the app are intended for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for any health concerns or decisions.

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

If you have any difficulties using the app, contact Flo via support@flo.health.

Notice of Access Permission:
Flo may request permission for:
- In-app notifications or reminders.
- Uploading photos to specific forum discussions.
- Uploading audio recordings to closed group chats.
Content sharing is entirely optional. Flo does not automatically access your content. You can select what you want to share.