Period Diary: Cycle Tracker app analytics for May 20

YOUR PRIVATE DATA NEVER LEAVES YOUR PHONE. Period Diary helps you track your menstrual cycle with privacy at the center. No account. No sign-up. No personal data collection. Your cycle data stays on your phone. Track what matters: Period start and end dates Cycle length and trends Ovulation day and fertile window estimates Daily symptoms, mood, flow, and notes Calendar view for a clear cycle timeline Reminders for upcoming period and ovulation days Built for clarity and control: Fast daily logging Easy-to-read calendar and cycle insights Helpful predictions based on your logged history Simple experience without unnecessary complexity Privacy-first by design: No account needed No personal profile required No exporting your health data to external servers Your entries remain on your device Whether you want a simple period tracker, an ovulation calendar, or a cycle log with symptom tracking, Period Diary gives you useful insights while respecting your privacy.