U.S. mobile app subscription revenue jumped 21% in 2019 to $4.6B across the top 100 apps Outside of in-app purchases in mobile games, subscription revenue from non-game apps helped to boost 2019’s mobile consumer spend — a figure that reached $120 billion globally last year, according to a recent report by App Annie. Now, new data from app intelligence firm Sensor Tower indicates U.S. subscription app revenue grew by 21% last year from the $3.