Flo Cycle & Period Tracker
Flo Cycle & Period Tracker Summary
Flo Cycle & Period Tracker is a with in-app purchases iOS app in the Health And Fitness category, developed by FLO HEALTH UK LIMITED. First released 10 years ago(Oct 2015), the app has 1.8M ratings with a 4.76★ (excellent) average rating.
Recent activity: 6.1K new ratings this week (690.6K over 4 weeks) with stable momentum. View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Jan 21, 2026.
Store info: Last updated on App Store on Jan 29, 2026 (version 9.97.1.2).
Flo Cycle & Period Tracker was last scanned for SDKs 2026-01-21. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Sentry.io
MongoDB
SDWebImage
Snap
AppsFlyer4.76★
Ratings: 1.8M
Screenshots
App Description
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
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