Today, consumers spend most of their time on smartphones using apps – and just five apps account for 88% of the time they spend using downloaded apps. For the average US smartphone owner, those apps are Facebook, YouTube, Instagram, Gmail, and FB Messenger. And although smartphone owners use about 24 unique apps in a given month, the remaining 19 command just a small slice of users' time.

Nicole Dvorak is a data scientist serving all roles. Follow her on Twitter at @NicoleLDvorak.

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About Forrester’s mobile audience data: Forrester’s mobile audience data helps you understand how your customers behave in their mobile moments — and if you play any role at all. It will give you a better understanding of your target consumers and how they use their mobiles and tablets, from the amount of time they spend on different social media outlets to their most popular time of day to visit shopping websites.We track behavior using a passive application on consumers’ smartphones and tablets that allows us to subtly collect data without disrupting normal behavior. Compared with other data sources, it allows us to capture actions at a very detailed level with precision, eliminating measurement errors by analyzing usage of what consumers do, not what they say they do. Please contact data@forrester.com when you would love to learn more.