In the last period, 2016, the largest presented point is Smartphone App Purchases with Users of 70.1M. The fastest growing participant in our report is Smartphone App Purchases with 65.33% growth in Users over 4 years between 2013 to 2016. The slowest growing topic is Tablet Application Purchases with 15.93% growth over the same period. This report is based on data published by eMarketer