Comparison
System1's Test Your Ad is the establishment benchmark for emotional ad testing — real panels, star ratings, and a research heritage brands trust with Super Bowl money. PreTestAds is the other end of the same spectrum: a brain-model screen that costs a credit and answers in minutes. The honest comparison is about sequencing, not superiority.
System1 shows your ad to human panels and measures emotional response, distilling it into star ratings that predict long-term brand growth, plus spike-by-spike emotional traces. Its norms database spans huge volumes of ads and years of validation work connecting emotion to market share. For brand-building campaigns, TV flights, and big seasonal moments where one ad carries serious budget, that depth is exactly what you're paying for.
PreTestAds answers a narrower question, radically faster: will this creative hold attention? AdCortex™ — trained on fMRI brain-response data — returns a percentile score against 76 top-performing TikTok ads, Hook Strength, the drop-off second, and the full curve, in minutes, self-serve, first analysis free. No panel recruitment, no fieldwork window. When you have eleven AI-generated variations on Tuesday and a launch on Friday, panel economics simply don't fit — screening economics do.
These instruments measure different layers. System1 measures how an ad makes people feel — the driver of long-term brand effects. PreTestAds predicts whether people keep watching — the gate every feed ad must pass before feeling anything. A beautiful emotional arc that loses the viewer at second three never gets to deliver its emotion; attention is upstream. Neither tool replaces the other; they audit different failure points.
Choose System1 when a single high-stakes ad justifies panel depth — brand campaigns, TV, big productions. Choose PreTestAds when you're iterating short-form creative at volume and need every variation screened cheaply before any of them earn real budget. The grown-up workflow uses both: model-screen everything, panel-test the finalist. What you should never do is spend media budget as your first test — that's the most expensive research design there is.
Kill weak variations for a credit each, then spend panel budget on the finalist — first analysis free.
Test Your Ad Free