Limitly

Limitly is a Shopify rule engine that helps merchants control product and cart behavior with flexible IF/THEN logic, all without coding. It supports quantity limits such as minimums, maximums, and step values, and can also block checkout based on conditions like cart value, customer tags, schedules, or other custom rules. The app is positioned as useful for wholesale and B2B stores, flash sales, limited drops, and inventory protection, giving merchants a way to enforce purchasing rules and manage demand more precisely.