Without context to narrow down the answer space, you're asking questions that require book-length answers. Few disparate thoughts: 1. Yes, it is extremely toug

Without context to narrow down the answer space, you're asking questions that require book-length answers. Few disparate thoughts: 1. Yes, it is extremely tough to make money selling iOS apps. App Store creates power law dynamics where Top 10 apps make as much money as the rest of the apps combined. If you're in Top 10 then congrats, but most likely you won't be. Median App Store revenue is few hundred dollars per month. iOS programmers are in demand today. It's much easier (and in most cases more profitable) to sell your iOS expertise for $100/hr than make apps yourself. 2. People make money both in games and apps. So can you. 3. There is not such thing as too much marketing. Try every marketing technique that you can think of and can afford. At the same time, no amount of marketing can rescue a bad app so you need to track conversion rates of your marketing efforts. 4. Free with ads vs. paid depends on your app. If you believe people will pay than go paid. If you don't, then free with ads but you have to be realistic: ad based business requires lots of volume so if your app is not in the "useful for lots of people" category, ads will not make you rich.