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Only 20 percent of American consumers’ time on mobile devices is spent on the web. A massive majority, 80 percent, is spent in apps: games, news, productivity, utility, and social networking apps.

Turns out, it’s an app world, after all.

According to app analytics firm Flurry, which tracks app usage on a staggering 300,000 apps on over a billion active mobile devices, we spend an average of 158 minutes each and every day on our smartphones and tablets. Two hours and seven minutes of that is in an app, and only 31 minutes is in a browser, surfing the old-school web.

A big chunk of that 158 minutes is taken up with games — 32 percent — but it’s almost shocking to see how much time a single app and a single company eats up. Eighteen percent of all the time that Americans spend on their phones is spent in the Facebook app, a figure that by itself dwarfs all other social networking apps.