Period Tracker is a simple, accurate, and completely private app for tracking your menstrual cycle. Unlike most period-tracking apps, all your data stays on your device — nothing is ever uploaded to a server, and the app works fully offline.

Why this app

• 🔒 Real privacy: no sign-up, no account, no cloud sync. Your data belongs to you alone.
  

• 📴 Fully offline-capable: works without an internet connection after installation.
  

• 🌙 Full Jalali (Persian/Solar Hijri) calendar support.
  

• 🎯 Smart prediction using a weighted moving average algorithm that gets more accurate the more cycles you log.
  

Key features

• Quick period start/end logging, with easy date correction if you logged it wrong
  

• Visual dashboard with a circular progress chart of your current cycle day and a countdown to your next period
  

• Automatic detection of your current phase: menstrual, follicular, ovulation, or luteal
  

• Color-coded Jalali calendar: current period range, past periods, predicted next period, and fertile window are all shown distinctly
  

• Daily symptom logging: mood, pain level, and flow intensity
  

• Dual mode: full "self-tracking" access, or a simplified, read-only "partner mode" so your partner can follow along and support you
  

• Daily phase-based tips — for yourself and for your partner
  

• Full JSON data export/import and a 6-month PDF summary report
  

• Light and dark themes, switchable anytime in Settings
  

• A complete in-app guide covering normal menstrual cycle ranges and warning signs that need medical attention
  
  Important note
  The information provided in this app is for general educational purposes only and is not a substitute for professional medical diagnosis or advice.