Period Diary: Cycle Tracker

Period Diary is a private, easy-to-use period and cycle tracker designed to help you understand your body without giving up your privacy.

No account required. No sign-up.
No cloud storage of your logs.
Your data NEVER leaves your phone.

Track your cycle with confidence:

Log period dates and cycle length
Track daily flow, symptoms, mood, and notes
View ovulation day and fertile window predictions
Use a calendar to see your cycle timeline at a glance
Set reminders for upcoming period and ovulation days
Why users choose Period Diary:

Privacy-first menstrual tracking
Quick and simple daily logging
Clear, practical cycle insights
Local data storage on your device
Built for long-term cycle awareness
Whether you are tracking for planning, symptom awareness, or everyday health, Period Diary gives you the features you need in a clean and focused app.

Privacy-first, always:

No account needed
No personal data profile required
No sharing health logs with third parties
Your cycle data stays on your phone
Optional premium features may include advanced insights, personalized predictions, and an ad-free experience.