I am thinking of trying my hand at iOS development. I don't have any previous iOS experience. I am an experienced programmer, but not in Objective-C or Java. I am also new to the Apple culture. All my professional work has been for my employer as part of a team. I am getting closer to retirement. My interest is supplementing my income through app development. With these sketchy givens, my question is whether a newbie to iOS development, working alone rather than on a team, can reasonably expect a return on investment for new application development? Or am I just lining Apple's pockets with easy money to pay for a membership in the iOS developer program, and an developer ID, with little chance of succeeding financially?