I don't feel particularly qualified to answer this question, but my opinion is that these questions should be secondary. The most important thing is identifying

I don't feel particularly qualified to answer this question, but my opinion is that these questions should be secondary. The most important thing is identifying your target market and figuring out how to most effectively meet its needs and if you understand that well then that will probably dictate the details of your strategy. What I think is pretty overdone at this point though are approaches that revolve entirely around a mobile app. Unless you're going for an aqui-hire or your potential customers just happen to all be entirely on one mobile platform I'd think twice about betting the farm on an app.