Apple tells the Associated Press that its Maps app is now used more than three times as often as its next leading competitor (that would be Google Maps) on iPhones and iPads, with more than five billion map-related requests each week. comScore says Maps has a “modest lead” over Google on iPhones in the U.S., though the research group measures how many people use a service in a given month rather than how often.
However, as the Associated Press notes, Google still dominates among all U.S. smartphones. Part of that reason is that Maps isn't available on Google's Android system. In October, Google Maps had more than twice as many smartphone users as Apple Maps. Apple used Googe Maps on iPhones and iPads before developing its own Maps app, which is also available on Macs.