In dating sites, science-based online dating sites are those pair-matching websites that claim to use “science”, such as chemistry, genetics, psychology, or the scientific method, etc., to match up potential couples. , motto: “lets people experience real chemistry”, a subsidiary of (Alexa-rank: 310), launched in 2006 and developed, in large part, on the theories of American anthropologist Helen Fisher, which claims to match people according to compatibility and chemistry.
Keynote presentation for the i Date internet dating conference in Cologne.
An overview of the most important players in developments in the online dating industry in The Netherlands and Belgium.
, motto: “the science of attraction”, started in 2006 by American chemical engineer Glenn Gasner, which claims that by using the new ‘science of attraction’ they have ‘taken the mystery out of romantic chemistry using nine years of research to match single users using personality patterns scientifically isolated in old high-chemistry couples.’  Gasner’s site algorithm, however, is a synthesis of probabilities, e.g.
how may dates does one need to go on to find a successful match, and personality inventories, e.g. The only science Gasner claims to use is the scientific method; subsequently, the logic of a standard chemistry textbook is not part of his scheme.
The site e (Alexa-rank: 1,100) founded in 2000 by American psychologist Neil Warren and Greg Forgatch, whose vision is not simply to create marriages, but to create happy marriages by using scientific research to unite compatible individuals.
"I love the challenge, that people think: How could you possibly measure interpersonal chemistry?
By having singles send in saliva samples, the site facilitates a laboratory analysis of each person's immune system type and, using this data, claims to create optimized “physical chemistry” or "sexual chemistry" between people based on the sweaty T-shirt study, a pattern, discovered in 1995, which finds that people are most attracted to the smell of people who have the most-dissimilar immune system.
 The site was conceived by Holzle, a long-time internet site dater, after watching a TV discussion on the findings of the sweaty T-shirt study.
The theory of desired dissimilar immune system matching can be quantified according to markers on a person’s major histocompatibility complex (MHC), a large gene region that controls the immune system response, and postulates that couples attracted to this type of scent owing to the result that a resultant child would create a more robust immune system, more defensive against a greater variety of pathogens.