Period Tracker - Fertility, Ovulation Calendar is an application that can be used to track the menstrual cycle, which is the regular cycle of the female reproductive system. This application is useful for women who are trying to get pregnant or who want to avoid pregnancy.

The application is based on the idea that a woman has a regular cycle of approximately 26 days long. It is the most commonly used method to try to predict the fertile days. The fertile days are the days when the egg is most likely to be able to get fertilized.

The application is useful for women who are trying to get pregnant because it will predict the fertile days. This application is also useful for women who are trying to avoid pregnancy because it will predict the days when the egg is most likely to be fertile.

The user will be able to input the information about her menstrual cycle. This will be helpful for the user to know when the next period is coming.

The application is also useful for women who are trying to get pregnant. The user will be able to input information about her health.