App designers have choice -- Apple's iOS, RIM's BlackBerry OS, or Google's Android. That's because the different devices each have their own operating systems. Until now, Apple was the obvious choice. But the others are beginning to catch up.
Number of apps
Platform market share
Percentage of users who have used at least one app
JASON DEL REY was a senior reporter covering technology, branding, and company culture for Inc. magazine. Before joining Inc., his work appeared in Newsday, The (Newark) Star-Ledger, and the Staten Island Advance, and on ESPN.com. He lives in New Jersey. @DelRey