Conceptually I was delighted as I've struggled with the Shopify product template because of format and image issues on the wholesaler's files. Sadly the drop downs for mapping fields were blank, so I tried to count where column headers should have been. I got to then end and was prepared to see my cleaned up file... alas, error so it is now a deleted app. Such a pity, I was so hopeful. Guess that's what you get for the great price.