TruEffect is leading in Top 100K Sites and Top 1M Sites.
TruEffect has better usage coverage in more websites categories. Including News & Media, People & Society, Business & Industry, Arts & Entertainment and 49 other categories.
Vertster is leading in Computer Hardware, Search Engine, Relationships & Dating, Womens Interests and 5 other categories.
TruEffect is leading in most countries, including United States, Japan, Italy, Russia and 15 other countries.
Vertster is leading in Ireland.