https://techcrunch.com/2017/12/05/consumer-spending-across-app-stores-worldwide-to-top-110-billion-in-2018/

Consumer spending on all mobile app stores will surpass $110 billion in 2018, according to a new report from App Annie, out today, which forecasts the state of the app ecosystem for next year. The $110 billion figure represents a 30 percent increase from the year prior, the firm also said, adding that the majority of the overall spend will come from games, as before.

However, the introduction of in-app subscriptions – a newer monetization model for apps – is starting to have an impact on non-games’ share of consumer spend. Though games still dominate in terms of overall dollars spent, the share for non-game apps will increase in 2018 as its growth is now outpacing that for games, App Annie said.