App developers that sell “digital goods or services” on the App Store or Google Play must use these app stores’ in-app payment solutions (respectively called In-App Purchase or “IAP” in the case of the App Store and Google Play Billing or “GPB” in the case of Google Play). The mandatory use of IAP or GPB … Continue reading Apple and Google’s lowering of app store fees to “help” developers : Separating the wheat from the chaff →