find more at Statista
In the fourth quarter of 2014, iPhone and Android smartphone users in the U.S. used an average of 26.7 apps per month, spending more than 37 hours with them. Interestingly, the amount of time people spend with apps continues to grow, whereas the number of apps they use stopped growing two years ago.
It seems like, despite the ever-growing number of choices available, there's a limit to how many apps people actually use. Or, to put it differently: there's an app for every need, but there's no need for every app.