This is a small application which will predict the Gender of a baby using Chinese method, Japanese method and Blood Age method.
Chinese method, Japanese method and Blood Age method. Chinese and Japanese methods are ancient ways of a baby gender prediction and Chinese method is based on the Chinese lunar calendar. Blood Age method is based on the theory of men's and woman's blood updating depending on date of their birth.
Here is an old post which shows the Chinese method
You can download it free here