The Geolocation app lets you recommend the best language & currency for your visitors based on their browser preferences and location. These recommendations show up on your store as a bar or popup. Your visitors can also change language and currency anytime with selectors, which work with any theme.
Shopify is a commerce platform that allows anyone to set up an online store and sell their products. It's the go-to eCommerce platform for young direct-to-consumer brands. It's ease of use and setup is what's most attractive to merchants, but also the incredibly vast Shopify app store.