Dutil Denim

Did everything it said it would do. Brought over all of my blog articles very quickly and easily, and allows me to make the Shopify articles canonical. I used it in conjunction with the "Excelify" app to push through a number of customizations, such as importing images, removing weird formatting issues (the result of Shopify not offering some of the same carousel/gallery features that wordpress does), and removing the "This article first appeared on [original blog url]" that the app appends to every article. The whole experience took a full day, which is much less than the 40 hours I had calculated it would take. If you want to transfer your images from wordpress to Shopify, I would suggest downloading all of the images from WP into a file using an export app, uploading them into Shopify via their file manager, and then find + replacing the portion of the wordpress path with Shopify's path.

Rewardify does what it says - it creates store credit for customers and lets you import store credit as well. It also has a suite of features that would be quite useful for wholesales or businesses that are reliant on store credit as a marketing tool. Having said that, it did not suit our purposes. Using store credit cancels out the ability for the customer to use discounts, because Rewardify saves the store credit as a discount, and Shopify does not allow discounts to be stacked. I also found their user interface to be unintuitive, and their documentation unhelpful.