How in-app purchases work also depends on the context. In most in-app purchases, the user has to enter their credit or debit card information, though some also work with sites like PayPal. Some dedicated retail applications or platforms, like Steam and Amazon, allow you to deposit money wit...
I accepted a “voucher” for $250 worth of cancelled bookings. Which they changed from US to Euro’s in my account to decrease the value even though they still charge in US for bookings. Over 4 months every time I tried to use it they also charged my credit card. Every time I had ...