Right, thanks a lot. We are friends and I've told him that I'm flexible & willing to find a reasonable solution that would be fair to both of us, but the fact that he doesn't want to talk about it at all really puts me in the position you've described. The thing I'm not sure about though is the ownership of the app - if he said to me that he'll simply form another company, I guess I'll wait if they make something of it and then I'll come back asking for a fair share