There will be nearly 46 billion mobile app downloads made this year, nearly double the 25 billion downloads in 2011. Among those downloads, free will continue to reign supreme: 89% of those downloads worldwide will cost nothing. That is also appearing to have a knock-on effect on apps that are sold for a price: 90% of paid apps will cost less than $3.
Short term projections like this one are OK with us (you know of our deep distrust of eMarketers ever up-trending two-tone forecasts). And this one includes pretty amazing numbers according to Gartner. (Free Apps Account For 89% Of All Downloads; Most Of The Rest Under $3; iOS Store Biggest Of Them All)