I downloaded the app to check it out on my iPad and thought it was pretty cool. There's not many games to choose from, but I'm sure they plan on adding more. The shows that are available ares all newer shows, which I'm not really interested in accept for Regular Show, or possibly the chance of checking out Adventure Time. I would love to see some cartoons I grew up with on this app: Dexter's Lab, Johnny Bravo, Cow and Chicken, and so on. Though I understand that this app is geared towards children, I still think that kids could enjoy the same cartoons I grew up with.
The Cartoon Network App is free (if you have a cable subscription), and can be downloaded here.