Estri Period & Cycle Tracker

Period Tracker, Ovulation & Fertility Calendar 🌸 Track your menstrual cycle with Estri — a private, AI-powered period tracker and period calendar that predicts your next period, PMS, ovulation and fertile days. Built for regular and irregular periods alike. 🩸 PERIOD TRACKER & PERIOD CALENDAR • Accurate period predictions that adapt to your body, even with irregular cycles • See menstruation, ovulation and fertile days on a clear, color-coded period calendar • Log flow, cramps, moods, cravings, energy and sleep in your period diary • Period reminders and PMS alerts, so you're never caught off guard 🌷 OVULATION TRACKER & FERTILITY CALCULATOR • Predict your ovulation days and fertile window with precision • Daily insights for your cycle phase — helpful if you're trying to conceive (TTC) • Ovulation notifications at the right moment in your menstrual cycle • Not planning a pregnancy? Understand your cycle phases with confidence 🤖 ESTRI — YOUR AI HEALTH COMPANION Ask anything about your cycle, symptoms, moods or fertility. Estri's AI chat knows your cycle day, remembers your patterns, and answers like a knowledgeable best friend — anytime, judgment-free. • Daily brief: hormones, mood, energy and body, personalized to your exact cycle day • AI food scanner: snap a meal for instant, cycle-aware nutrition insights • Cycle-synced meditations and gentle self-care nudges 🤰 PREGNANCY TRACKER & DUE DATE CALCULATOR Expecting? Switch to pregnancy mode: • Week-by-week pregnancy tracking with your baby's size and development • Due date countdown, trimester timeline and pregnancy-safe nutrition tips 🫶 PARTNER CONNECT Invite someone you trust to follow your cycle, symptoms and daily updates — keep your support system close through every phase of the month. 🎁 Invite a friend and you both get 7 days of Premium free with your personal referral code. 🔒 YOUR DATA STAYS YOURS Your menstrual health is nobody's business but yours. Your data is protected, never sold, and you can delete it anytime. 📄 DOCTOR-READY REPORTS Export a clear PDF summary of your cycles and symptoms to share with your gynecologist. From your first period to pregnancy planning — Estri is the period tracker and ovulation calendar that grows with you. Note: Estri should not be used as contraception and does not replace professional medical advice.