The Direct TV stream app is currently not available on SmartCast. This TV uses our SmartCast Platform which offers a host of built in apps, as well as support for Google Chromecast, Apple AirPlay 2, and voice support for SIRI, Google Home, and Alexa. If you find there is an app you want to watch that is not on SmartCast you may be able to cast it using Chromecast or Apple AirPlay from your phone or mobile device. Thanks!