About Private Ovulation & Fertility Calendar Studio
Calculate your exact ovulation peak day, 6-day high fertility window, next menstrual period date, and conception due date. Includes interactive visual monthly calendar and offline iCalendar (.ics) export.
Key Capabilities & Features
- Peak ovulation day prediction
- 6-day high-fertility window calculation
- Visual interactive monthly cycle calendar
- 6-month forward projection schedule
- Private .ics calendar export for Apple/Google Calendar
How to Use Private Ovulation & Fertility Calendar Studio
Input Dates
Enter the first day of your last period and your typical cycle duration (e.g. 28 days).
View Predictions
Review your peak ovulation date, fertile window, and conception due date.
Export Privately
Click Export to iCal (.ics) to add your cycle dates directly to your phone calendar.
Privacy & In-Browser Execution Guarantee
100% Client-Side Privacy. Your reproductive cycle data is processed in local browser memory and never uploaded to any server or cloud database.
Frequently Asked Questions
Is my reproductive cycle data kept private?
Yes, 100%. All cycle calculations happen entirely inside your web browser. No dates, notes, or cycle information are ever sent to any server or database.
How is the fertile window calculated?
Sperm can survive in the reproductive tract for up to 5 days, while the egg is viable for 12-24 hours. The fertile window spans the 5 days leading up to ovulation plus ovulation day itself.