Android and iOS users in the US spend an average of 2 hours and 42 minutes every day using apps on smartphones and tablets (up just four minutes compared to last year). Of that, 86 percent (or 2 hours and 19 minutes) is spent inside apps, while the remaining 14 percent (or 22 minutes, down 6 percentage points compared to last year) is spent on the mobile Web using a browser. These latest figures come from mobile firm Flurry, which provides analytics and ad tools that developers integrate into their apps. The company collected data between January 2014 and March...