This would be great for porting already-done and well-defined stuff to oddball platforms that you don't have in-house experience with and are not comfortable vetting talent in that particular platform. "We're primarily an iOS company, here's our existing app, here's what it looks like, how every interface behaves, the backend services it hits, etc. Now just do exactly this, but on Windows Phone." I don't know if I'd have the guts to use it for "I've got nothing but an idea--make me an app from nothing!"