From the site:
"With genetically highly compatible people we feel that rare sensation of perfect chemistry. This is the body’s receptive and welcoming response when immune systems harmonise and fit together.

The effects of genetic compatibility

Genetic compatibility results in an increased likelihood of forming an enduring and successful relationship. Research has also shown that the sex lives of genetically compatible partners are more satisfying than average. Additionally, fertility rates are higher in genetically compatible couples and they have healthier children. "

and it cost only 199$

Aw . . . . this is taking all the fun out of it!