TV Ranking is an application that you can check the top 20 ratings of TV programs broadcast yesterday. You can check the ratings of the terrestrial, cable, and comprehensive channels, as well as the ratings of the last 8 episodes (only if they are included in the TOP 20/10). The audience rating information included in this app is based on the content provided by Nielsen Korea, you can check on the Nielsen Korea website (https://www.nielsenkorea.co.kr/). (If the same program name occupies multiple rankings, it is broadcasted by dividing it into 1, 2, 3 copies, etc., and it is a phenomenon that the research company announces the ranking without displaying 1 or 2 copies.)