In terms of content, HBO NOW is an app that's hard to beat. With it you can stream TV shows like Game of Thrones, The Sopranos, True Detective, The Wire, and Curb Your Enthusiasm in high-def – all in their original version and with subtitles as needed.
In addition to all the HBO series, the app lets you access a wide variety of recently released movies. You won't have all of today's premieres, but ALMOST all of them. And, again, in high-def streaming and with different audio and subtitle options.
HBO NOW is a good official app from HBO that lets subscribers enjoy a fantastic viewing experience.