Is the app compatible with Shopify multi-currency or multi-currency apps?

If your Shopify store is selling in multiple currencies using the Shopify multi-currency feature, our app will automatically display all amounts using the customers' currency. 

No configurations are needed, the app will automatically detect which currency the customer uses, and display all product prices in the selected currency following the Shopify multi-currency specification.

You can learn more about the Shopify multi-currency module at https://help.shopify.com/en/manual/payments/multi-currency

However, if you are using a third-party app to add multi-currency to your store, the app will not integrate with it; and therefore, it will not display amounts in other currencies, but the main store's currency. In this particular case, you might opt to hide the variant prices in the variant selector. In this article you'll find clear instructions on how to achieve it: How to show/hide variant prices in variant selector.