HBN: Quantity Limits

HBN: Quantity Limits is a Shopify app that helps merchants set and enforce minimum, maximum, and multiple-of quantity rules at checkout. It supports rules at the product, variant, collection, or catalog level, and gives shoppers clear guidance on product and cart pages while Shopify validates enabled rules during checkout. The app also includes retail and B2B conditions, scheduling, conflict checks, localized messages, and a rule simulator, making it useful for merchants who need more control over how customers purchase items.