There's an App Maker for That With DIY programs, small businesses can join the app revolution on the cheap.

With more than 1.1 million apps available for smartphones in the U.S., consumers are coming to expect every business to have one. The problem for most cash- and time-strapped small businesses is that developing a mobile app is an expensive and difficult proposition--or was.

This year a slew of do-it-yourself services have come online and pierced the armor of the $20.5 billion app-development market, allowing everyone from indie musicians to neighborhood coffee shops to claim space on their customers' phones--and in their wallets.