iPhone & iPad users use an average of 7.3 apps in a month

"360 View:Mobility and the App Economy finds the Android ecosystem is larger in terms of users but that Apple's iOS ecosystem is more robust for app usage and expenditure.
The average iPhone user uses 7.3 apps on a monthly basis, compared to 6.2 apps for the average Android phone user.
iPhone and iPad owners use, on average, one more app per month than Android phone and tablet users, even though both segments download roughly the same number of apps per month.
iOS users also spend more, with 22% of iPad owners and 23% of iPhone owners spending $1 or more per month on apps. These differences in expenditure are a natural extension of higher incomes among iOS users.
4% of U.S. broadband households use both an iPhone and an iPad; 15% use both an Android phone and an Android tablet; 11% use one Android device and one iOS device.
70% of U.S. broadband households with a household income of $100,000 or more own both a tablet and a smartphone."

Source:  Press release from Parks Associates, 15th October 2014