Apple prevents developers from disclosing in the app that Apple collects a percentage of in-app purchase amounts as a fee: https://arstechnica.com/tech-policy/

Apple prevents developers from disclosing in the app that Apple collects a percentage of in-app purchase amounts as a fee: https://arstechnica.com/tech-policy/2020/08/facebook-says-apple-vetoed-telling-users-about-30-percent-event-charge/ https://arstechnica.com/tech-policy/2020/08/facebook-says-ap... Apple's excuse for this restriction is that Apple considers the disclosure "irrelevant information". Any user who wants to be fully informed about their purchase would disagree.