This is a free, complimentary stack designed primarily to use in conjunction with the CommentsStack. However if you don't have the CommentsStack yet, it is still feasible to supply a datafile in the same prescribed format, for RatingStack to use. The purpose of RatingStack is to take user submitted ratings and produce attractive written narrations, bar charts and star scores to display on your websites. Customer ratings are a powerful selling feature on websites. RatingStack has no dependency on any outside services. And it's PHP 8.0 compatible too.