An Excel spreadsheet system that shows exactly what your AI tools cost and what they're worth to you. Log each subscription once — monthly and annual cost, cost per use, time-saved value, and ROI calculate automatically, and every tool gets a KEEP, REVIEW, or CANCEL verdict. Includes a live dashboard, 30-day renewal watch list, and quarterly audit sheet totaling projected savings from canceling dead weight. No macros; works in Excel 2016+, Google Sheets, and LibreOffice.