"Your competitors could just download the source code, figure out what you wrote, and re-work it into their app. As long as it was different enough, there's not

"Your competitors could just download the source code, figure out what you wrote, and re-work it into their app. As long as it was different enough, there's not much you could do. I'm not sure how this would really help you." It prevents your competitors from forking a proprietary copy and building on top of it. Looking at the code and re-writing it is a substantial investment.