The average for all app spending reached $100 in 2019. Games makes up the largest segment of that, representing 54%. The growth for game spending was about the same as it was from 2017 to 2018, which also saw a 22% increase. Growth has been steady for awhile, with average spending in 2015 sitting at $23 in 2015.
While gaming is healthy, the Photo & Video category (which includes things like YouTube and the photo editor PicsArt) actually eclipsed it in terms of growth. The average iPhone user in the U.S. spends less on these apps than games, about $6.30 each, in 2019. But this represents a massive 75% increase from 2018.