Flo Cycle & Period Tracker

Welcome to the world’s leading period tracker*, backed by 120+ doctors and medical experts, recommended by OB-GYNs, and trusted by 420M+ women worldwide. Whether you're tracking your menstrual cycle, trying to conceive (TTC), understanding PMS or PMDD, or navigating pregnancy or perimenopause, Flo is here for every life stage. With Flo’s period tracker, you’ll get personalized insights, accurate menstrual cycle predictions, and a better understanding of your ovulation, fertility, pregnancy and overall health. Join Flo’s growing community today. Why Choose Flo? Easy: It’s a period tracker, ovulation tracker for those trying to conceive, pregnancy tracker, symptoms tracker, and a guide for understanding symptoms of perimenopause to PCOS, endometriosis and fibroids all in one app. • Trusted by 420M+ worldwide with over 10 million 5-star ratings. • With Flo’s smart period tracker, log symptoms daily to uncover cycle trends, learn what they might mean, and feel more prepared for doctor visits. • Set birth control reminders and share your calendar with a partner to stay in sync. • Use our ovulation tracker for tips to better recognize when you're more likely to conceive. Combine it with BBT (basal body temperature) logging and expert TTC tips. The ovulation tracker is especially helpful for couples on a trying-to-conceive journey. • Check if symptoms match those common in PCOS, endometriosis, uterine fibroids, or perimenopause with our Symptom Checker tool.** • Sync Flo’s period tracker with your smartwatch or wearable for even deeper tracking and insights. • Teens can use Flo’s period tracker to understand their first menstrual cycles and track symptoms in a safe, supportive space. • Flo for Partners: Share Flo with your partner to get support during your menstrual cycle, make TTC a joint effort, or track your pregnancy journey week by week with our comprehensive pregnancy tracker. •Track each trimester with confidence using Flo’s pregnancy tracker, which offers weekly updates, expert content, and baby development milestones. It’s more than just a calendar—it’s a full companion during your pregnancy. • Stay on top of changes caused by hormone shifts during perimenopause with dedicated tracking tools and expert guidance. • Understanding PMS and PMDD and tracking your mood could help you notice menstrual cycle patterns and plan ahead. • Industry-leading privacy and security with dual ISO certification. • Optional Anonymous Mode protects your privacy — no one, not even Flo, can identify you through your health data. Enjoy More with Flo Premium Premium-only features include: • Personalized symptom patterns analysis. • Symptom Checker for PCOS, perimenopause, endometriosis, and more. • In-depth pregnancy tracker functionality for each milestone. • Flo for Partners: Full menstrual cycle sharing designed for couples. • 24/7 virtual Health Assistant. • Expert-reviewed articles, videos, and courses. • Information around contraception and fertility planning. • Advanced ovulation tracker tools to help you understand fertility insights. 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. Contact [email protected] for assistance with our period tracker and ovulation tracker. Download Flo today and join the millions of women, from teens to pregnant moms and more, who trust Flo as their period tracker, menstrual cycle calendar, ovulation tracker, and pregnancy tracker. * Sensor Tower, March 2025, by downloads. ** Not available in the UK or EU.