LangShop theme is a duplicate of the original theme. It gives Shopify merchants the extended abilities to translate all data in your online store including static text, resource tags, and images.
However, LangShop theme is optional. You can still add language and currency selectors, translate store content in the original theme.
LangShop theme may also serve as a backup. If you accidentally delete the original theme, you can restore the LangShop theme to its original state by removing LangShop code blocks and assets.
Get to know the app better, read more about LangShop theme.