Flo Ovulation & Period Tracker

Flo is a science-backed cycle, ovulation, pregnancy, and period tracker with over 570 million downloads worldwide.*

Track your period (regular or irregular), predict ovulation, and learn to spot your fertile signs, follow changes to your baby and your body with a pregnancy tracker, and explore common perimenopause symptoms. Flo is here to support your whole menstrual cycle and female health journey.

🌍 Is my data safe with Flo?
Your health data deserves the highest level of protection.

Flo is the first and only period tracking app with dual ISO 27001 and ISO 27701 certifications, internationally recognized as the gold standard in data protection. In 2025, Flo was recognized as ISO 27001/Information Security Management System Team of the Year at the PICCASO Privacy and Security Awards, honoring our excellence and commitment to privacy-first design.

- Anonymous Mode: Use the Flo period tracker without linking your name, email, or personal identifiers.
- Secret Chats: Connect with 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 period tracker and ovulation tracker designed to help you notice patterns over time.

- Over 70 trackable 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

👶 Can Flo support my trying-to-conceive (TTC) journey?
Flo offers educational features to help you explore conception insights and better understand how to spot fertile signs.

- Fertile window and ovulation predictions based on your logged period data
- BBT (basal body temperature) tracking

🤰 How does Flo support my pregnancy week 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
- Expert-reviewed content and community stories for peace of mind

👩 Can Flo help me explore common perimenopause symptoms?
Track changes during perimenopause with tools designed to help you better understand this life stage.

- Perimenopause Score to follow symptom changes month by month
- Menopause Timeline to understand the phases of perimenopause
- Tracker to log cycle-related changes in sleep, energy, mood, and well-being

💚 Is Flo free?
Flo is free to download, with all the core tools you need to plan and understand your cycle.

📚 What do I get with Flo Premium?

- Daily, tailored insights and expert-led videos
- In-depth pregnancy features for every milestone and baby stage
- Symptom Checker** that provides educational information on polycystic ovary syndrome, endometriosis, and uterine fibroids symptoms
- Fertility 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.

Medical disclaimer
Flo does not provide medical advice, diagnosis, or treatment, and is not a method of birth control or conception aid. Predictions and features are for informational and educational purposes only. Always consult a qualified health care professional.

Wear OS complications & tiles: Set up a tile and complication on your watch for insights about your cycle. Flo period tracker is compatible with Wear OS 3.

Download Flo today and join millions using a trusted period tracker, pregnancy app, and cycle tracker.

*Total number of users who downloaded Flo, July 2026
**Symptom Checker not available in the United Kingdom or the European Union

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

1. General Information The information provided by MoboReview ("we," "us," or "our") on moboreview.com is for general informational and educational purposes only. All information on the Site is provided in good faith, however, we make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability, or completeness of any information on the Site.

2. Affiliate Disclosure (FTC Compliance) MoboReview believes in transparency. Some of the links on our website may be affiliate links. This means that if you click on the link and download or purchase an app or product, we may receive a small commission at no extra cost to you. This helps keep our website running. Regardless of affiliate relationships, we only recommend apps and services that we genuinely believe will add value to our readers.

3. Editorial Independence & Sponsored Content From time to time, we may receive free access to premium apps, software, or promotional items from developers in exchange for a review. We may also occasionally publish sponsored content. However, compensation never dictates our editorial content. All reviews, opinions, and ratings expressed on MoboReview are strictly our own and are based on hands-on testing and objective analysis.

4. App Changes and Accuracy The tech world moves fast. While we strive to keep our reviews as accurate and up-to-date as possible, app developers frequently update features, change pricing models (e.g., switching from free to subscription), or remove apps from the app stores altogether. MoboReview is not responsible for any discrepancies between our review and the current state of an app. We highly encourage you to verify the app’s features, pricing, and compatibility on the official App Store or Google Play Store before downloading or purchasing.

5. External Links Disclaimer The Site may contain links to other websites or content belonging to or originating from third parties. Such external links are not investigated, monitored, or checked for accuracy, adequacy, validity, reliability, availability, or completeness by us. We do not warrant, endorse, guarantee, or assume responsibility for the accuracy or reliability of any information offered by third-party websites linked through the site.