Sarah Perez / TechCrunch:

Sensor Tower: worldwide App Store spending will reach $96B by 2023, up 104% from $47B in 2018; Google Play will reach $60B, up 140% from $27B in 2018  —  Consumer spending in mobile apps across both Apple’s App Store and Google Play will grow by 120 percent to reach $156 billion worldwide by 2023 …

Sensor Tower: worldwide App Store spending will reach B by 2023, up 104% from B in 2018; Google Play will reach B, up 140% from B in 2018 (Sarah Perez/TechCrunch)
Source: Tech Meme