Get In-App-Item Price In USD - Instead of User's Local Coin

Question

For Analysis and collecting data I want to get The price of SKProduct in dollars.

The base code I use to show the user the price is :

   _priceFormatter = [[NSNumberFormatter alloc] init];
   [_priceFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
   [_priceFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];

   [_priceFormatter setLocale:inAppProduct.priceLocale];
   inAppItemString = [_priceFormatter stringFromNumber:inAppProduct.price];

This code give me the real price the user should pay with his local coin

I tried to set the local as en_US, but I got the same price as before , with the $ :) This what I changed for trying this:

   NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
   [_priceFormatter setLocale:usLocale];

Any idea how to get the price in USD ?

Answer 1

You can send an http get request to an online conversion service, e.g.:

http://api.fixer.io/latest?base=GBP&symbols=USD

returning

{"base":"GBP","date":"2016-09-01","rates":{"USD":1.3261}}

to get the rate, which hopefully should not be too far from the rate used by Apple, and then calculate the value in USD.