Diagnostic tool · runs in your browser · the file is never uploaded

See what your workbook is actually holding up.

Drop in a budget, forecast, or reporting workbook. We read every formula, draw the map of what depends on what, and flag the things that break silently: external links, single points of failure, hardcoded escalations, circular references, the INDIRECTs nobody can trace. You get a Fragility Score your CFO will repeat.

Drop a workbook here.xlsx or .xlsm · budgets, forecasts, rent rolls, anything with formulasChoose a file

The file never leaves your machine. Every formula is read and the graph is built in this browser tab. If you ask for the report, we receive your email and a handful of counts — sheets, formulas, score — and nothing from inside the workbook. Close the tab and it's gone.