Unfortunately, this has been a recurring topic where others, including myself, have complained about the lack of an HBO viewing app with no helpful response from LG. Several others have different ideas about why an HBO app isn't offered, but it would be nice if LG would give a response. There are a number of other posts about this issue for which you may search and some have offered alternative methods to try and watch HBO, none of which seemed like what I wanted (I just want to fire up the app and watch HBO, just like Netflix, Amazon Prime, or Showtime). Welcome to the unhappy customer club.