Dependency Auditor is an add-in for Microsoft Excel®. Dependency Auditor uses advanced technique to analyse and trace dependencies, trace and filter errors, evaluate formulas in Excel. It allows you too see all data flows in workbook. You can quickly find all input cells, which affects to selected formula. Error tracing tool gives you ability to see all error chain, and analyse how calculation errors affects to other cells. You can easily navigate between dependencies in workbook. Advanced formula evaluation techique shows all steps of calculation in simple and understandable form. This add-in will help you to analyze and debug calculations and derivations in your spreadsheet.