AppStore In-App-Purchase: How to get the currency a user will pay in?

Question

I have an iOS app using In-App-Purchase that caters to an international audience, so I expect payments in different currencies (USD, EUR, CNY, ... you know them from the AppStore Pricing Matrix). Of course I would like to show the items for purchase with the user's local currency, but I don't really know how.

Using the region or language of a user seems like a bad indicator, as the currency depends on the region of the AppStore account the user is using and not on the device settings.

How can I find out which currency a user will pay in?

Answer 1

Once you have SKProduct object fetched you can construct its localized price from price and priceLocale properties. Here's copy-paste from apple docs how to do that:

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
[numberFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
[numberFormatter setLocale:product.priceLocale];
NSString *formattedString = [numberFormatter stringFromNumber:product.price];