What is it?
The Ovulation Calendar app [App Store link 4,99US$] computes the fertile days of the month and predicts future periods and ovulation. that application additionally keeps track of events related to your menstrual period, like the menses type, the symptoms, the Body Basal Temperature, etc.
Note: For men who wants to learn more about ovulation please check wikipedea HERE
Feature list:
Saves up

Orginal post by Waku_Waku