Shopify shows what you have in stock. Restock shows what to do about it: which products are about to sell out, how many to order, and when — ranked by urgency, with the revenue at risk if you wait. It does the math the way you would on paper: recent sales velocity against current stock and your lead times, so every recommendation is one you can verify. No black box, no lengthy setup. Built for multiple locations and large catalogs of any size.