Pick iSpot if you're a brand or agency that wants to know how your TV and streaming ads perform, from creative testing through reach to conversions and lift. Pick Nielsen if you need audience measurement across TV, streaming, audio and digital, plus planning data, from the company whose ratings much of the TV market has long traded on. Both are sales-led, enterprise purchases.
Pick iSpot if
- Your question is which ads work, not just how many people saw them.
- You want to test creative before it airs and benchmark it once it's live.
- You need outcome attribution, such as conversions and incremental lift, tied to TV and streaming exposure.
- You want competitive intelligence on what rivals air and where.
Pick Nielsen if
- You need audience measurement across TV, streaming, audio and digital in one view.
- You plan media and want audience segmentation and scenario planning data.
- Your sellers or buyers trade on Nielsen ratings.
- You also need content metadata, which Nielsen sells through Gracenote.
How they differ
Pricing. As of November 2026, neither company publishes prices. iSpot's site routes buyers to a demo or sales, and Nielsen's site offers a demo. Some Nielsen datasets are sold through its Nielsen Marketplace. Expect a custom contract with either.
What they measure. iSpot focuses on video ads. Its products cover creative assessment, audience measurement across linear TV, streaming and out-of-home, ad verification and outcome attribution. iSpot says it is MRC-accredited for national TV ad occurrence reporting and JIC-certified as a national TV currency. Nielsen measures audiences more broadly. Nielsen ONE brings cross-media audiences into one platform, alongside TV and streaming, audio and digital content ratings. Nielsen says its global panels include over 750,000 participants, and it pairs them with big data.
Core strength. iSpot ties ad exposure to creative and business results, so marketers can see which spots drive outcomes. Nielsen's strength is breadth and its long-standing role in audience ratings, which makes it the reference point many media deals use.
Where each falls short. iSpot is centered on TV and video ads, so it's not the tool for audio or wider media planning. Nielsen's focus is audiences and planning, so creative testing is not what it leads with. Both are priced and sold for large advertisers, agencies and media companies, not small businesses.
| iSpot | Nielsen | |
|---|---|---|
| Main focus | TV and streaming ad performance | cross-media audience measurement |
| Media covered | linear TV, streaming, out-of-home | TV, streaming, audio, digital |
| Creative testing | yes | not a headline product |
| Pricing | sales-led | sales-led, some data via Marketplace |