I tried sideloading it on my nvidia shield, version 6.2.2.001. It crashes after i click "Get Started" to sign in. I know they added chromecast feature but it only works if the device is on the Helix Hub WIFI. I am actually using google wifi as primary router to spread the wifi around the house and i cannot cast when my phone is connected to the google home wifi. Maybe there is a way around this?
They really need to make an Android / Apple TV version of the app. Bell Fibe has the app on those platforms and Virgin now provides tv solely through their app. Virgin allows you to connect up to 4 devices with one subscription, no need to buy over priced proprietary hardware and pay for additional tv connections. Will be looking into the other services and making a switch.