GoodDayOS is the first AI‑powered ERP retail operating system built specifically for Shopify brands, unifying inventory, order, supply chain, and accounting workflows within the Shopify admin. It eliminates manual errors and duplicated data entry by centralizing purchase orders, vendor management, shipments, receiving, transfers, adjustments, and returns alongside complex wholesale and pre‑book sales orders, all powered by real‑time integration with Shopify, retail POS, and 3PLs. A proactive integrated dataflow layer offers bulk editing, configurable fields, and CSV exports, while the GoodDay Sheets App enables one‑click syncing with Google Sheets, automated data refresh, and custom script support. Operational accounting features such as estimated landing costs, three‑way match, and revenue recognition deliver clear budget‑to‑actual analysis, and GoodAI agents will automate repetitive tasks.