Google Play is catching up to the Apple App Store by some metrics, but still has a ways to go, according to a year-end study by Dutch analytics firm Distimo. Both stores now have over 700,000 apps, but the App Store generates about 4.3 times more revenue than Google Play. "On a typical day in November 2012, the revenues in the Apple App Store exceeded $15M USD, while in Google Play the revenues are just below $3.5M USD in 20 of the largest countries in both app stores," Distimo writes.