The 15 best mobile apps of 2011

Mobile apps will remain a universal obsession only as long as they continue to captivate, surprise and entertain consumers. Fortunately, the app ecosystem shows no signs of slowing: Innovative and immersive mobile experiences are entering app stores every day. Indeed, 62 percent  of U.S. smartphone owners have downloaded mobile applications in the past 30 days, with 83 percent of those downloads originating via devices running either Apple's (NASDAQ:AAPL) iOS or Google's (NASDAQ:GOOG) Android, according to Nielsen's latest Mobile Media Report. Each month, FierceMobileContent has been looking at the best and brightest, spotlighting the new apps that you need to download to your smartphone ASAP. Here are this year's finest--the best mobile apps of 2011. Special feature