There is not a Direct TV app on Roku, you can download Direct TV Now (it's a pay service that is an additional monthly charge). That being said there are a number of channels "apps that you can download and install using you Direct TV account login. Most are like a on demand service however a few do stream live content. You can review the Roku channel store and it will give you a good idea of what's available (they usually say something like "included with cable subscription") .