Create the copied coupon code on shopify (For eg - APP10-APP-*****).

Select the discount type. In this case, we have selected the 1st option  Amount off products "Product Discount"

Add the Discount code here that has been generated in the plobal dashboard.

Click the "Value" field & put in the discount %

Click the "Search collections" field - this is for the specific collections to which the discount is supposed to be given.

Click "Browse" & select the particular collection for which you intend to give the discount.

Click "Mobile App ‑ Plobal" so that the discount is specific to only the Plobal Mobile app.

Now, you can share the Discount code "APP10" with your customers as the "-APP" suffix is just for internal reference.

You are all set. This coupon code will work for the Mobile App only. 

How to set up App Only Discounts?