Dr Stacked Discounts on Cart

We're using Shopify Plus. This is one of the best app in terms of front/back end design, performance, and feasibility. The support is super fast and helpful. So far, we didn't know that the discount codes can be applied before the checkout process. It works very well. All the use cases were considered very carefully including Gift Card cases. Anyway, I think all shopify merchants should install this app. Otherwise, you'd lose money each second :)