Withly Cart Rules

Withly Cart Rules is a Shopify app designed to help merchants enforce purchasing rules and encourage larger orders. It lets merchants set minimum order quantities and case-pack multiples for products or individual variants, blocking checkout when a cart line does not meet the rule and showing a clear message to the buyer. The app also supports optional quantity tiers that apply the best matching percentage discount to qualifying line items, with rules enforced per cart line for all buyers and previewed before saving.