Mobile app analytics company Flurry has just released a report, studying per-user revenues generated by various apps that use their services across the Amazon App Store, Google Play and the Apple App Store. While it isnt much of a surprise that Apples App Store leads the way, what really is worth noting is that the Amazon App Store is not only ahead of Google Play, but is smoking it. The revenue model used for the study was solely in-app purchases, so the data provided here doesnt apply to paid or ad-supported apps (the latter of which are an overwhelming majority in Google Play).
Android Phone, Flurry claims Amazon App Store provides 3X revenue compared to Google Play