HBO NOW finally reached the Google Play Store, but if you want to use it, you will need a clean smartphone or tablet. If you have a rooted device, you will be unable to run the app because you know you’re a pirate and HBO doesn’t like pirates.
You first get a 30-day free trial of HBO NOW after which you will pay $14.99 a month to legally get full streaming access to all those award-winning TV shows and movies. You don’t need to have a cable subscription for the app to work. Sadly, you don’t get Chromecast or Android TV support with it.
If you will try to hide the root access, it may or may not work, but if you try to download and use the app regardless, you will find out about the root restriction only when you actually try to open the app. It’s probably easier to just torrent a TV show than to manipulate through the root-iness of your device anyway.