GoodDayOS™ by GoodDay Software is a retail operating system built for Shopify brands. It centralizes inventory, purchasing, wholesale, and accounting in one simple, connected platform—replacing spreadsheets and legacy ERPs. Built directly into Shopify, GoodDayOS helps operators manage inventory more accurately, automate key workflows, and make faster, data-driven decisions. Brands get up and running in weeks, not months, with a system designed by former retail operators who understand how modern commerce actually works.