Paid iPhone Applications Tend To Top Rankings Longer Than Free Apps

App store analytics startup Distimo just released its May report , and zoomed in on the average number of days applications across various categories maintain their top rankings in Apple's App Store. Analyzing data collected from November 2009 to April 2010, the company found that paid applications in the Top Overall, Games, Business and Entertainment categories stay in these categories for 27, 39, 59 and 38 days on average, respectively. Free applications stay in the Top 100 for a significantly shorter time in those categories, with 19, 21 and 39 days on average, respectively. The exception to the rule seems to be the Entertainment category, in which free apps stay in the Top 100 for a slightly longer period of time than paid applications; 43 days compared to 38 days.