There are some web sites where you cannot speak to anyone. Others do not have a company or a person behind the web site and the payment goes to web site paying agency which has not issued any of the information or promises. Most web sites do not have any evidence of biological research and quote the moon cycle or biorythms and therefore join the "old wive's tales" category!

Some methods rightly refer to the importance of the acidic or alkiline ph environement. But then they limit this importance to the vagina and not the actual egg. The latter does reject the the sperm if both are the same ph or accepts the sperm if there is a power charge created by the opposite polarities, but the vagina environement is not relevant!

Well known methods of baby gender selection

Microsort - Ericsson - Embryo selection : Sperm sort is still difficult and expensive. read more details

Timing method - Shettles method: No measured success rate and an unlikely theory. read more details

Dieting: Farmers used it with a reasonable success rate.

BabyByGender based on Selnas - other pH methods:

Follows nature's way with a measured success rate.
Diet & BabyByGender conception calendar
Following a strict alkaline or acidic diet does have some measure of success. Farmers have used it for years, successfully producing more animals of a desired gender. Extreme dieting for humans is not really safe for the mother and child, so another way had to be researched to go along with nature. Research was necessary over many years so as to provide a chart of the days when the ph of the egg was ready for a boy or girl sperm.
Gender determination with BabyByGender
The time when the embryo cell is created is as a result of a fusion or energy provided by the meeting of the opposite ph of the sperm and egg membrane. So simply said, if the membrane receptors are acidic then they will only accept the opposite alkaline ph of the sperm (a sperm with an X or Y chromosome). Apart from providing a fusion (or energy) for the creation of the cell it also helps the sperm to penetrate the thick membrane of the egg. So the BabyByGender conception calendars shows the days that nature has chosen as favourable for a boy or favourable for a girl.

Other theories: Chinese calendar is not used by Chinese people; sexual positions does not help biological process. Jonas method's theory is not logical. FortuneBaby read more details

I will be happy to discuss my personal views on gender selection with you apart, of course, from repeating the above information. Just contact us.
All the best!