This has been my experience in the startup world. My startup went from a few scribbled notes on paper to a full app in the app store in three months, including

This has been my experience in the startup world. My startup went from a few scribbled notes on paper to a full app in the app store in three months, including 50 lessons, 6 mini games, and a challenge/achievement system. Naturally, I had to cut a LOT of corners to do that, and accrued a ton of technical debt, but I was able to keep the high level architecture relatively supple, and as a result tackle the various messes individually rather than as a whole later. It paid off. Or architecture has since changed twice over so none of the old code remains, but we're strong on investment, have lots of people, and are poised to take over our target market. And we got app of the year last year.