Thank you for your comment. I understand that idea is worthless, and execution is what matters. While aiming to become a company is indeed a dream for me, but

Thank you for your comment. I understand that idea is worthless, and execution is what matters. While aiming to become a company is indeed a dream for me, but I am taking baby steps. What I want to create is a mobile app, nothing fancy, and see if I can sell the mobile app. Because it's such a simple idea, that's where my fear comes from. I build the idea, outsource to developers to create the mobile app, and at the end, instead of owning my mobile app, the developer is selling my idea of mobile app at AppStore, AppWorld and Android Market. I suffer a potential loss of income. That's what I am afraid of. How vulnerable am I even after the developer signed the NDA and non compete agreement and the developer is not USA based? Of course, I could have tell Apple, Blackberry, and Google to stop the app listing, but that's a long process and during the process, money are going to the developer ways.