A pair of new studies have found that, even years after they were first introduced and months since the latest models debuted, Apple's iOS platform and its iPad tablet are actually growing their share in two key metrics: the iPad and iPhone are actually taking usage share away from Android in the US, and the iOS platform has increased its dominance in mobile ad spending, a key metric for developers. Recent stats from March show the iPad gaining 1.4 percent in usage share, and iOS taking now 75 percent of mobile ad spending.
