Just downloaded this app and it's surprisingly good. You must be a Comcast/XFINITY subscriber obviously, but there are tons of shows to choose from and only one commercial at commercial breaks. It looks like there's a 24 hour delay after airing for most shows to appear but I've only checked a few so far. Video quality over 4G is excellent.
Strangely though, if you are rooted it requests root permissions the first time you start it up. I denied the permissions and it still works fine.
If you're a Comcast/XFINITY subscriber I'd check it out!
XFINITY™ TV Player - Play Store