Star rating can be found everywhere. It is a standard rating scale that’s being used by popular marketplace sites. Star rating is a valuable metric that tells others what most of the people think about a certain product, an app or a movie in general. A star rating comprises of stars with the amount usually at a maximum of five. You let your users rate an item using stars. One star means poor; five is excellent. By selecting more than one star, all previous stars should be filled.