This is like the least useful possible version of the phrase "ABC mobile app" that anyone could have come up with. It seems to be inspired by two services. The first is HBO Go, but HBO Go is, well, good. It has a deep catalog, so you can watch any of its stellar older series, it has apps for other devices like Roku and Xbox 360, it lets you watch the show you want when you want to watch it. It is a good service. The authentication, in which you have to register that you do in fact pay Time Warner, Comcast, Verizon, or whoever else for cable, that's a pain, but theoretically, you shouldn't be able to watch HBO shows unless you had cable anyway. That's the only way to get HBO shows! But not ABC.