Over the last couple of years, I've had lots of people come to me with these types of business propositions.
It's essentially an ideas guy with no money. What's the point of ever partnering with someone like this? The biggest problem is that they will just want the product to be finished and since they have no skin in the game, can easily move onto something new (and if you do become successful, will come after you in court).
If you are a developer, you should only partner with someone that is a developer and can help you get your app done, has money, or has connections.
