It's not in the TV store, only on the web
Hows it look?
Let me guess, can't sign in via Comcast?
I tried it out. It's not bad, much like the Nick app, but it's just not content I want to watch.
It's in the Play Store now on the Nexus Player, so I'd assume all other devices have followed suit.
Awesome, now all they need is programming worth watching.