NeatOak Invoice Check

NeatOak Invoice Check is a Shopify app designed to help merchants verify supplier invoices against purchase orders before payment. It compares invoice line items to an existing Shopify PO, highlighting unit price differences, quantities that exceed the order, and unmatched items, with source text shown beside each line for easier review. The app supports English text PDFs, CSV, and JSON imports, allows users to correct imported values, export results, and save private reviews and decision notes. It is limited to comparing one invoice with one PO in the same supported currency, and PDF imports require verification because scanned PDFs are not supported.