RevenueCat survey of nearly 30K mobile subscription apps finds that only 17.2% of them will reach $1,000 in monthly revenue and only 3.5% will reach $10,000 (Sarah Perez/TechCrunch)
https://techcrunch.com/2024/03/12/most-subscription-mobile-apps-dont-make-money-new-report-shows/
http://www.techmeme.com/240312/p34#a240312p34