As you build your apps and grow your business, make sure that you know the equation that impacts your success and are truly focused on every component of it. If you keep focused on maximizing your installs, retaining more them and better monetizing your audience, you'll succeed over time.
The equation might be simple, but the work is not. It requires continued investment, commitment and evaluation in order to move the needle each and every piece of the equation in order to build a sustainable app business. Fortunately, the number of potential app customers is growing dramatically every day, so the potential audience for your app, which is a number you can't control, is growing rapidly every month.