Thanks for your reply Mark,
Well it’s a rating and review web/ mobile app, including all the U.S. bussiness, service companies.
My target costumes is everyone using those services, the service is free to use, register and rate.
Am not planing to make money from this project at the first couples of years ( may be Google ads for running cost).
Am from Europe, so I don’t really know the U.S. most effective way to advertise for such a service.