However, from a developer perspective, I'm still staunchly in the "I want to build on iOS" camp because of the Android fragmentation issue and because there still seems to be an overwhelming majority of consumer spend on the iOS app ecosystem compared to Android. The Google apps on iOS are really very nice (though admittedly not as nice as their Android counterparts), but the only Google app I really want at this point is a Calendar app. Syncing and manipulating Google Calendar events with the native iOS Calendar app is still pretty terrible.