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.