Where it comes from
The line in the source
approximately $424 million of in-app purchases
Explore / Figure
Record
Sensor Tower GO first-year gross IAP, US (vendor C), Jul 2016-Jul 2017
$424m Jul 2016-Jul 2017
EstimateOur model or estimate. Treat it as an order of magnitude.
Found in one pass only. The research team reads every source twice, independently; this record turned up in one reading but not the other, so treat it as less certain than its grade.