Comparison
Two of the biggest names in ad pre-testing, both panel-based, both enterprise — and aimed at surprisingly different questions. Here's the honest breakdown, from a company that competes with neither on their home turf.
Zappi is a research platform, not a single test: validated templates for ad, concept, and pack testing run against real consumer panels, with results accumulating into a connected data asset so each study makes the next smarter. Insight teams at large CPGs use it to democratize research that used to bottleneck through agencies — comprehension, appeal, distinctiveness, purchase intent, at hours-to-days turnaround.
System1 is a specialist: panel-measured emotional response distilled into star ratings that predict long-term brand growth, with spike-by-spike emotional traces and one of the deepest validation databases connecting emotion to market share. For brand-building work — TV flights, seasonal moments, campaigns measured in equity — its narrow depth is the product.
Breadth: Zappi — one platform across the innovation and creative pipeline. Emotional depth and brand-growth validation: System1. Connected learning across studies: Zappi. Boardroom shorthand: System1's star rating travels further in a slide deck. Price and procurement: a tie — both are enterprise contracts with per-study fieldwork economics underneath, and neither publishes a rate card (see our guides to Zappi pricing and System1 pricing).
Both platforms assume the ad gets watched — panels are captive audiences. Feeds aren't. Most performance creative fails at the attention gate, in the first seconds, before comprehension or emotion can register. PreTestAds screens exactly that gate: AdCortex™, trained on fMRI brain-response data, scores your ad against 76 top-performing TikTok ads in minutes — Hook Strength, drop-off second, the full curve — from about $2 per test, first one free. Teams run it in front of either platform so expensive fieldwork only sees creative that already holds attention.
Buying one platform for everything? Insight team with broad research needs → Zappi. Brand team optimizing emotional impact on big media → System1. Performance team shipping feed creative weekly → honestly, neither: your per-ad economics point at the screening tier first, with panel research reserved for hero assets. Full comparisons: PreTestAds vs Zappi · PreTestAds vs System1.
Attention verdict in minutes — first analysis free.
Test Your Ad FreeZappi if you're an insight team that wants a broad, connected research platform — ads, concepts, packs — run at agile pace. System1 if your question is specifically emotional response and long-term brand growth, especially for TV and big brand campaigns. They overlap less than their category suggests.
Both field your ad to real consumer panels, both sell enterprise contracts quoted through sales, and both price per study underneath — which means neither fits testing every variant of high-volume feed creative.
For the attention gate specifically, model-based screening like PreTestAds runs about $2 per test with results in minutes — used by many teams as the layer in front of panel research, so panels only see creative that already holds attention.