Logan Merrick, CEO of App development company Buzinga tells some stories of success and fail from customers. One main lesson is that if you don't plan marketing to acquire users early, you don't get enough feedback or usage to know how to improve the app.
You can get the full transcript and details at http://www.streethawk.com/blog/2015/04/acquire-enough-users-to-learn-your-apps-weaknesses/