Does White Christmas work on my Facebook or Buy Button sales channels?

Unfortunately, our apps only work on the Online Store sales channel.

While the Shopify platform offers different sales channels (see https://apps.shopify.com/categories/sales-channels), it does not provide a way to run apps on most sales channels.

If you have seen any third-party app running on a Facebook channel, for example, it probably is not a native Shopify app but an integration with an standard web application.