Hi, we are using In app purchase - non consumable only. i have few questions regarding developing IAP. is it possible implement card payment with In app purchase, instead of using default Apple ID balance? is it possible to set custom pricing from our server to app for IAP? suppose, if app user doesn't have fund / balance in his /her apple id balance, what to do during iap implementation i mean where to redirect the user ? suppose, if app user doesn't have login, what to do during iap implementation ? Thank you.

Hello, I have referred apple's document and other sites to get familiar with Apple Pay with the iOS app. (using swift) they all say how to implement Apple Pay with stripe. so, my question is, is it possible to make full transaction success without backend server/stripe? Thank you.