Not specifically related to Carowinds Connection, but I do some development and am actively exploring mobile app creation for at least one of my sites. However, the tools that I have at the moment require a Mac in order to build mobile apps for iPhone.

(I'm a PC guy)
If I get past that hurdle, you never know... But, you will note that the foundation that the new Carowinds Connection is built on is responsive and very mobile friendly.