Canalys has a new report on the app stores across 50 countries. Quarterly growth was 11% in Q1 2013, compared to 2012. Revenue from paid apps, in-app purchases and subscriptions combined grew by 9%. There were more than 13.4 billion downloads in total. Apple’s App Store accounted for 74% of revenues while the Google Play had the greatest number of downloads at 51%. BlackBerry World and the Windows Phone Store "remain distant challengers"
From my position, as an app developer, I am currently seeing a change in two areas. The first is porting apps from iOS to Android. My clients are indicating that it’s no longer possible to release just on iOS and appear to have a serious proposition. The second area is non-phone Android devices. That is, using the Android OS in an embedded device to utilise its inherent UI and comms capabilities.