iOS pays developers According to IDC, Android devices accounted for almost 70 percent of global smartphone shipments in Q2 2012, up from 46.9 percent in Q2 2011. With the installed base of approximately 430 million Android smartphones it might be thought that Android would be the first platform targeted by developers for any new app. But that's not the case. Why? It comes down to money. An OPA survey conducted in March 2012, found that iOS users are far more likely to spend money on apps than are Android users. In the past year, 66 percent of the Android users included in the survey haven't purchased an app.