In this article series, you will learn how
Discount Ninja combines promotions
Discount Ninja can combine:
any number of line-level promotions
an order-level promotion
a shipping promotion
The app automatically figures out the best promotion to apply to each product.
By default, the app does not stack discounts.
For more details, check out this article.
Discount Ninja supports stacking
If you need multiple order-level promotions to stack (i.e. apply the sum of the discounts), you'll need to configure stacking.
For more details, check out this article.
Shopify discount codes can be stacked on top of Discount Ninja promotions
For more details, check out this article.