6.12 Number of apps on a smartphone. At a recent Appnation conference, Nielsen reported an average of 41 apps per smartphone among U.S. smartphone subscribers.4 State the population for this survey, the statistic, and some likely values from the population distribution. 6.12 Number of apps on a smartphone. At a recent Appnation conference, Nielsen reported an average of 41 apps per smartphone among U.S. smartphone subscribers.4 State the population for this survey, the statistic, and some likely values from the population distribution