I have to vote for CheapAppGamer as well, the only really catchy title here.
Looking at what is stated as the feature list, I'm not so sure that I would use the app. Looking up game prices is going to be fantastic for many people, but I tend to look at the deals forum to see how people are discussing the latest deals, such as "Hey, Barbie super adventures is $5 at gamestop!" "Oh, hey, you should actually look into it, it's great!" To this extent, will there be a mobile version of the site to read the forums, or is the concentration of resources going into the app version of the site? (And to all current mobile users, does CAG show well on smartphones?)
Also, do you know if John will be working on apps for the blackberry/Android systems?