I also think selling reviews for an app is completely wrong

As
marlboroza said, let's think about the fact when we want to download an application that we never knew before, the first thing we do is reading reviews about it, nobody wants to use an application with 1 star rating, right? So the service that
coinliker is providing will distort information about the application, or in other words, it is a way to cheat users.
Fake reviews include cheating. Everyone knows that, including you.
And you admit you are providing fraudulent services