1 · Drop your daily creative-level export
One row per creative per day, from Meta / TikTok / Google exports. We find the likely date each creative started decaying — and how much you have spent since.
No export handy? See what this tool does with a realistic account.
2 · Map columns & choose the metric
Sensitivity settings
Defaults are deliberately conservative — a fatigue tool that cries wolf gets closed. Lower the threshold or consecutive days to catch changes earlier, at the cost of more false alarms. Changes re-run the analysis instantly.
Results
Sorted by money spent after the likely change point — biggest ongoing loss first. Click a row for the full chart and daily numbers.
Algorithm self-test (for development)
Step / noise / slow-decay / direction-flip / gap / zero-baseline fixtures with hand-written expectations.