Problem is more along the lines of "solo developer" here. Hacker News seems to have a real thing about this niche for whatever reason, but when doing something like this that I think requires real expertise in a wide variety of subjects that aren't software development, I think you need help. There's no way something like Rosetta Stone was developed without the input of experts in language learning and teaching, for instance. Knowing the platforms, programming languages, frameworks, and app store onboarding and delivery processes is already a lot for one person, but expecting to know the target domain on top of that is expecting an awful lot from yourself. I don't think it's a great sign trying to crowdsource business strategy from a free web discussion board, as a single example. This is the kind of conversation you want to have with your private team of people you know for sure have the experience they claim to have, not anonymous comments.