Quadru ‑ Square SKU Sync

Quadru connects your Shopify store with Square POS for seamless inventory management. Browse your Square Item Library directly in Shopify admin and compare catalogs side by side to match products by SKU. Import Square items individually or in bulk as drafts, with smart SKU suggestions that follow your store's naming style available in-app or through Sidekick. Set up two-way inventory sync between one Shopify location and one Square location. You control which system wins when inventory counts disagree—choose either Shopify or Square as your primary source. The sync only moves inventory counts and never automatically adds, edits, or removes products, prices, or images, keeping your catalog safe while maintaining accurate stock levels across both platforms.