This is the one

Running a mixed online ecommerce store using Woocommerce and a retail front taking payment through Square, inventory management and book keeping have been cumbersome. I explored a lot of sync apps and went with the best I could find 6 months ago, which was a complete disaster. I finally came across a reference to Foosales in a forum, and took a look. Much to my astonishment, this integration actually delivers on its promises, and comes with intelligent customer service support that can actually resolve issues. Of the dozens of sync apps pretending to mesh woocommerce and square, this is the only one that does the job. 6 stars.