Fortune's Philip Elmer-DeWitt reports on data from Piper Jaffray with an interpretation that:Apple users buying 61% more apps, paying 14% more per appThe Piper Jaffray report stated that iOS (iPhone/iPad) owners downloaded an average of 51 apps in 2010 and will download 83 this year. It also reported that 82% of the apps in Apple's app store are free apps. These figures sound about right and shouldn't generate much argument. However, the information about average app price (bas [...]

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