Cycle Tracker

Cycle Tracker is a comprehensive menstrual health app designed by Ricardo Santos, MD, PhD — a gynaecologist and reproductive medicine specialist. Clinical rigour meets intuitive design to help you truly understand your body. DETAILED CYCLE TRACKING • Log menstruation, spotting, cervical mucus, basal body temperature, LH surge tests, and intercourse • Visual calendar with colour-coded events and predicted fertile windows • Track 15+ physical and emotional symptoms with light, moderate, and heavy severity levels • Customisable cycle and period length settings PREDICTIONS & ANALYTICS • Advanced algorithms predict your next period date and fertile window • Cycle regularity assessment and length trend analysis • Historical pattern recognition across multiple cycles • Personalised insights based on your unique data PRIVACY FIRST • All data stored locally on your device — never shared, never uploaded • Optional biometric authentication (Face ID / Touch ID) • No advertising, no data collection, no third-party access • Complete offline functionality SHARING & EXPORT • Share encrypted cycle data securely with your doctor via QR code • Export your data as JSON for healthcare consultations and backups • Optional Apple Health integration SMART NOTIFICATIONS • Customisable reminders for upcoming periods • Ovulation and fertile window alerts • Notification settings fully under your control DESIGNED FOR EVERYONE • Available in English, Portuguese, and French • Full dark mode support • Accessible and inclusive design Cycle Tracker was developed with the clinical accuracy your reproductive health deserves. Whether you are monitoring your cycle, planning a pregnancy, or simply learning your body's patterns — this app gives you the tools to do it right. Developed by Ricardo Santos, MD, PhD Gynaecologist · Reproductive Medicine Specialist Assistant Professor, University of Porto Faculty of Medicine Researcher, CINTESIS — Centre for Health Technology and Services Research Ferticare, Centre for Reproductive Medicine, Braga Hospital Senhora da Oliveira, Guimarães