You cannot use IAP for fintech. See https://developer.apple.com/app-store/review/guidelines/#goods-and-services https://developer.apple.com/app-store/review/g

You cannot use IAP for fintech. See https://developer.apple.com/app-store/review/guidelines/#goods-and-services https://developer.apple.com/app-store/review/guidelines/#goo... > 3.1.5(a) Goods and Services Outside of the App: If your app enables people to purchase goods or services that will be consumed outside of the app, you must use purchase methods other than in-app purchase to collect those payments, such as Apple Pay or traditional credit card entry.