377139-pandora-4-0Research firm comScore has published its latest report into the US mobile apps market, armed with the claim that apps now account for 52% of Americans’ “digital media time”.

That’s fuelled by continued growth in the time they spend using mobile apps – up 52% year-on-year – although the report does provide more evidence for the theory that modern smartphone owners tend to use a small selection of apps heavily, rather than lots.

So, while more than a third of US smartphone owners download at least one app a month, the top 7% of owners account for nearly half of all downloads in any given month. And 42% of all app time spent on smartphones comes from the device owner’s most-used app, while three quarters comes from their top four apps. The study suggests that social networking accounts for 25% of US app time, followed by games (16%) and radio (8%).

Wait, radio? Yes, Pandora Radio to be specific: comScore estimates that its mobile app has 69m monthly users, making it the fifth most popular in the US behind Facebook (115.4m), YouTube (83.4m), Google Play (72.2m) and Google Search (70.2m).

Other apps of interest to Music Ally readers in comScore’s rankings include Instagram (46.6m active users in the US), iTunes Radio/iCloud (40.5m), Twitter (34.7m) and Shazam (18.4m).

But Pandora is second in its share of mobile app time spent in the US by 18-24 year-olds according to comScore, with 9.1% only behind Facebook’s 14.8%. For 25-34 year-olds the respective figures are 7.5% and 18.5%.