Nielsen: Average Number of Apps per Smartphone Now 41

Last week Nielsen released data comparing US smartphone users' app adoption and usage vs. last year. Nielsen says that the average US smartphone owner in 2012 has 41 apps on his/her phone vs. 32 apps in 2011:

In just a year, the average number of apps per smartphone has jumped 28 percent, from 32 apps to 41. Not only is the 2012 smartphone owner downloading more apps, they are increasingly spending more time using them vs. using the mobile web — about 10 percent more than last year.

Nielsen also says that smartphone owners spend roughly 39 minutes a day using apps (vs. 37 last year). However this finding is much lower than Flurry's earlier declaration that smartphone owners spent 94 minutes per day in apps. It's not clear why these numbers should be so far apart. It may be that Flurry's data are behavioral (analytics based) and Nielsen's figures are based on self-reported survey data -- in which case the former would be more accurate. However, this is speculation. 

Flurry_App_versus_WebUsage_Dec2011

Earlier this month comScore released data that asserted "4 in every 5 mobile media minutes" are spent in apps vs. the mobile browser. 

According to Nielsen the top five mobile apps across smartphone platforms are Facebook, YouTube, Android Market, Google Search and Gmail. Finally, the measurement firm added that its surveys show users continue to be concerned about mobile privacy and location sharing: 

[P]rivacy continues to be a concern with the vast majority (70% in 2011 and 73% in 2012) expressing concern over personal data collection and 55 percent wary of sharing information about their location via smartphone apps.