Its strength is that it can play iso files. The famous free app VLC cannot play iso files. A little tip: even if you delete a video from within the app, it will not be reflected in the app's capacity immediately. You can free up space by deleting it completely from "Recently Deleted" in the "Files" app after a month or by deleting it completely from "General" -> "Storage" -> "Infuse" in the iPad settings. It will be reflected in the capacity immediately when you delete it.