Showbox Official App Here is all about the ShowBox Offical app and how you could get started with the application that is here. The ShowBox is a free media streaming app, and the application here is supported on Android, iOS, PS4, Apple TV, PC, Xbox, and many other more platforms such as ShowBox app download for the tablet. What is the Showbox app? Showbox is the best smartphone app to watch newly released movies, TV series, and all other top media collections free of charge. You can use Android or iOS smartphones to get access to this service.