Ace Metrix and the Ad-Effectiveness Measurement Category in 2026: Who Operates the TV and Cross-Platform Ad Score
Ace Metrix, founded in 2007 and acquired by iSpot.tv in 2021, is one of the longest-operating ad-effectiveness measurement firms. The Ace Metrix score — derived from large-panel consumer responses to TV and digital video ads — sits in a category that now includes iSpot.tv (parent), Kantar Millward Brown, System1, Nielsen Brand Effect, and DAIVID. The category has expanded from TV-only to cross-platform measurement as brands now run ads across linear TV, CTV, YouTube, TikTok, and programmatic display.
By EPR Editorial Team · Edited on Jun 19, 2026
The fact block
- Ace Metrix: Founded 2007; acquired by iSpot.tv in 2021
- iSpot.tv: Real-time TV ad measurement; serves 95%+ of US brand advertisers
- Kantar Millward Brown: Largest global brand-tracking and copy-testing firm
- System1: UK-listed creative effectiveness firm; "Test Your Ad" platform
- Nielsen Brand Effect: Cross-platform brand-lift measurement
- DAIVID: AI-driven attention and emotion measurement
- Olympic and major event ad measurement: All five vendors run dedicated panels for Olympics, Super Bowl, World Cup
What ad-effectiveness measurement actually tests
Four dimensions. Watchability — does the audience pay attention. Persuasion — does the ad change purchase intent. Brand attribution — do viewers correctly identify the advertiser. Emotional response — does the ad generate the intended feeling. Each vendor weights these differently; Ace Metrix's composite score blends all four.
