Does anyone know what app this store uses? I'm looking for something very similar. I currently use product options by Bold.
Thank you in advance
This is hard to determine the exact solution they are using. It's very possible they have built a custom solution by the way of a developer. In this case, you could look at hiring your own Shopify expert to create a custom solution for you. If this interests you, you can check out the directory of Shopify Experts to get started.
With that said, I do know Product Options By Bold does have some similar style traits in terms of using color swatches and drop-down menus. They offer this on their premium plan version. Otherwise, if you are looking for a cheaper alternative, Dynamic Product Options is a fantastic solution and they also offer images and swatches.
Let me know if this helps! If there is anything else I can help you with, please let me know.