Compute rows that are only in sheet A, only in sheet B, or in both; for example, line up two statements by reference number.
Match two Excel workbooks on a fixed key and list rows that agree or exist on only one side.
Upload two Excel workbooks and match them on the fixed key. Export works today; the badge says In trial and there is no second export gate.
Download the template pack for a filled sample workbook and a header-only blank workbook. Map the required columns, compute in the browser, then export a result sheet. No signup.