Prices displayed in local currency using store pricing tiers

Hardcoded price strings like "$9.99/month" display the wrong currency and wrong amount to users in other countries — App Store pricing tiers mean a US $9.99 subscription may be priced at £7.99, €9.99, ¥1,500, or A$14.99 depending on the market. Showing a US price to an Australian user who is actually charged A$14.99 is a misrepresentation of the cost that violates both Apple guideline 3.1.1 and consumer protection laws in many jurisdictions. Apple's and Google's IAP SDKs return a localizedPrice string already formatted in the user's local currency — there is no reason to hardcode prices.

Replace all hardcoded price strings with the localizedPrice (or equivalent) returned by the platform IAP SDK at runtime. Never define a price constant as a string in src/constants/pricing.ts or equivalent.

// RevenueCat — correct
const price = offering?.monthly?.product.priceString; // "$9.99" or "£7.99" etc.

// react-native-iap — correct
const price = product.localizedPrice;

// Never do this:
const price = '$9.99'; // wrong for non-US markets

// Show a loading state while fetching, not a hardcoded fallback:
const displayPrice = price ?? 'Loading...';

Also avoid using prices fetched from your own backend — your backend does not know the user's App Store region or currency, and its pricing may lag behind changes made in App Store Connect.