The mobile app economy is exploding (so, what else is new?)

SAN FRANCISCO — Simon Khalaf is a mobile believer. The Flurry chief executive built a case for the explosion in mobile devices and apps in a talk Thursday at the Flurry Source 13 conference in San Francisco. If your company hasn’t gotten on board the mobile bandwagon, then you’re pretty late, Khalaf argued.

The U.S. still leads in iOS and Android devices with 181 million units, compared to 167 million in China, 35 million in the United Kingdom, and 28 million in Japan. While still dominated by America, mobile is a global phenomenon, Khalaf said. China grew 293 percent in iOS and Android device activations in the last year. Vietnam grew 269 percent, and Colombia grew 260 percent.