Period Tracker

Period Tracker is a period and ovulation tracker designed with privacy at its core. All data is stored locally on your device and protected with AES-256 encryption. CYCLE TRACKING • Log periods with one tap and get predictions that improve over time • Track ovulation and fertile windows based on published medical research (Wilcox et al.) • View your cycle on a calendar with color-coded phases • Record 70+ symptoms across 9 categories including pain, mood, body, and sleep PREGNANCY MODE • Switch to pregnancy tracking with week-by-week milestones • See your due date, trimester progress, and baby size comparisons • Log pregnancy-specific symptoms like morning sickness and baby kicks HEALTH INSIGHTS (Pro) • Cycle length and period length trend charts • Basal body temperature (BBT) tracking and graphing • Weight tracking with trend visualization • Export your data as CSV or PDF health report PRIVACY BY DESIGN • All data encrypted with AES-256 via Android KeyStore • Completely offline — no servers, no accounts, no data collection • PIN and biometric lock to protect the app • Decoy mode: enter a different PIN to show a calculator instead of your data • Screenshot protection enabled by default • Delete all data instantly with one tap FEATURES • 25 languages supported • 6 theme colors to choose from • Dark mode • Home screen widget showing your cycle day • Customizable notification text for discreet reminders • Period, ovulation, and medication reminders IMPORTANT This app is a tracking and estimation tool. It is not a medical device. Do not use it as your sole method of contraception. Consult a healthcare provider for medical decisions.