Shopify POS is one of the great features of Shopify. It lets you merge your brick and mortar stores with your online presence.
The app is not currently compatible with Shopify POS. However, we are working on a solution to integrate Pickup + Delivery in the future. Right now we don't have an ETA for when this will arrive.
If you have any feedback on how you would envisage this working or any feature requests that you would like to see from this integration please reach out to us on firstname.lastname@example.org.