The site is to be directed at an ever-growing market of individuals seeking extra-marital affairs.
“Other dating sites exist, but they are pretty quiet on the issue of infidelity and sex,” 28-year-old Cindy Leuenberger told online news site Le Matin.
“With us, things are clear!” said the nightclub manager from Saignelégier.
Leuenberger, who set up the site up with her brother, predicts success for the business since "sex sells" and infidelity is no longer the taboo it once was.
But not everyone in the primarily Catholic canton has warmed to the initiative.
“The remarks of some people I met from Saignelégier were quite negative, even nasty, although others were more positive. People are free to register or not," she said.
The local abbot has admitted to being surprised by the launch of the site.
“It is clear that our official position is to say that people should respect the morals and values that we preach, which is not this,” Abbot Nino Franza told Le Matin.
The site, called SwissInfidelity.ch, promises complete discretion and free membership for women. It already has over 1,000 members.
The US equivalent website, Gleeden, has over 1.3 million users, 40,000 of which are Swiss, the website reported.