Hi guys, I'm in the midst of a situation and would like to have some input from you. Here's the thing: I've had an app developed by an individual who was very proficient in app developing. There were some issues along the way and eventually I decided to stop working with this individual and search for another developer to finish this app. The app is about 90% finished and needs a bit polishing and 2 minor issues fixed, so I hit up Elance and Upwork to search for developers to finish the app. After finding several individuals, I have the feeling that they might "steal" the current source and build the app themselves. Keep in mind that the niche I am in is non-competitive and there's a lot of potential revenue to be generated, thus I am stuck with a dilemma: How should I find the right developer who'll finish the app and not steal the source from me? Please let me know how I could approach this situation the best way.