This chart shows the growth of the world's two largest app stores. Apple's App Store reached 50 billion cumulative downloads on May 15, just edging out Google's Play Store currently at 48 billion downloads. www.statista.com/topics/1002/mobile-app-usage/chart/1109/google-play-looks-set-to-overtake-apple-s-app-store/ Currently Google's Play Store is growing, it ...