No code built, just concept and mocks. I can think of some details (including the brand) that could easily be changed to make it more or less a "new app" but I'd love to speak with someone about what my legal situation is with this. I want to build it, and they don't care about the idea (until it becomes a competitor I'm sure).
To clarify: I don't care if they make the app or not. I care about my legal stance if I build the app on my own, considering it's probably their intellectual property at this point.