InsightExpress is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
InsightExpress has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, News & Media, Business & Industry and 89 other categories.
Marktest is leading in Newspapers.
InsightExpress is leading in most countries, including United States, China, United Kingdom, Russia and 42 other countries.
Marktest is leading in Portugal.