Cycle Tracker: Period Log

Built by a gynaecologist, not an ad network. Your cycle data never leaves your phone — no account, no cloud, no tracking.

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 • Predictions calculated from your own cycle history, not population averages • 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 care 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.

IMPORTANT Cycle Tracker is a tracking and educational tool, not a medical device. Predictions are statistical estimates calculated from the cycle history you enter — they are not a diagnosis and must not be used as a method of contraception or to rule out pregnancy. Always speak to your doctor before making any medical decision.

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