Period Tracker: Cycle & Flow

Track your period, predict your cycle, and understand your body, all without ever going online. PeriodTracker is a beautifully designed, 100% offline menstrual cycle tracker that keeps every piece of your data on your device. No account. No cloud. No data sharing. Ever.
Is my data safe with PeriodTracker?

Your data never leaves your phone. Period.
◦ No account or sign-up required, start tracking instantly
◦ 100% offline, works without internet, always
◦ Delete all data anytime by simply removing the app

SMART CYCLE PREDICTIONS
A guided 17-step onboarding personalizes your experience from day one. As you log more cycles, PeriodTracker automatically refines your average period and cycle length, giving you increasingly accurate predictions for your next period, fertile window, and ovulation day.

BEAUTIFUL CYCLE WHEEL
See your entire cycle at a glance with a stunning animated ring chart, period days in pink, fertile window in purple, ovulation in green, and a "today" indicator showing exactly where you are. The center displays days until your next period, current cycle day, and pregnancy chance.

GENTLE, SMART REMINDERS
Set a local notification before your period arrives, choose how many days ahead and what time. Reminders update automatically whenever your cycle data changes. Fully local, fully private.

Key Features:
◦ Accurate period, fertile window, and ovulation predictions
◦ Beautiful animated cycle wheel visualization
◦ Track flow intensity, light, medium, heavy, or spotting
◦ Log moods, symptoms, cramps, headaches, bloating, fatigue, and more
◦ Track breast changes, vaginal discharge, and ovulation test results
◦ Record physical activity. Running, yoga, walking, gym, cycling, swimming
◦ Daily water intake tracker with visual glass grid
◦ Sleep duration and quality logging with weekly charts
◦ Weight and basal body temperature tracking (metric or imperial)
◦ Free-text daily journal notes
◦ Detailed cycle, fertility, and wellness reports
◦ Full cycle calendar with color-coded period, fertile, and ovulation days
◦ Every setting editable anytime, nothing is locked after onboarding

Your cycle. Your data. Your device. Only yours.