The iOS App Store is projected to remain the single most lucrative app store through the forecast period, generating more than $60 billion in gross consumer spend in 2021. However, the combined consumer spend on Google Play and third-party Android stores is expected to overtake it in 2017 thanks to their dominant smart device market share and strong installed base growth
https://9to5google.com/2017/03/29/a...-ios-app-store-in-terms-of-revenue-this-year/.
https://9to5google.com/2017/03/29/a...-ios-app-store-in-terms-of-revenue-this-year/.