From the event site:
“Developer conference & exhibition: Apps World will be returning to North America in 2014 for two days of engagement and high level insight and discussion around one of the largest growing industries – mobile apps. Apps World North America will be taking place in the tech capital of the world San Francisco on February 5th-6th February at the Moscone Center. With over 8000 developers, mobile marketers, mobile operators, device manufacturers, platform owners and industry professionals expected for 11 different targeted workshop tracks, speed meeting, 1-1 meetings, parties, tackling a spectrum of issues across the app ecosystem. The event will also include 5 free to attend developer workshop tracks and a free exhibition with over 250 exhibitors.”
Information and registration here.