comScore has released some numbers about smartphone and feature phone browser and app usage, as it relates to map access and mobile navigation in the U.S. These numbers are based on a study, which found 14% of mobile users in the U.S. accessed maps on their devices in April, as the mobile map audience reached 33.5 million users, a 44% increase from last year. More mobile users are also now accessing maps via apps as opposed to the browser, the study found.