Artistry.io

It's a great app with tremendous potential! Once you understand the workflow, it is relatively easy to build a good looking product builder. But the options within the app are still limited, and the website implementation on shopify sites is rather clunky. BUT IT WORKS! To see how I'm using it, check here: www.fusedfootwear.com/products/design-your-custom-sparks-copy (and wait for that button to change -_-)