US iPhone users spent, on average, $79 on apps last year, up 36% from 2017

Apple’s push to get developers to build subscription-based apps is now having a notable impact on App Store revenues. From 2017 to 2018, iPhone users spent an average of $21 or more on in-app purchases and paid app downloads — a 36 percent increase compared with the 23 percent increase from 2016 to 2017, when revenue per device grew from $47 to $58. This data indicates that subscription apps are playing a significant role in helping drive iPhone consumer spending higher.

Source: techcrunch.com