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 38 other categories.
Vertster is leading in Computer Hardware, Relationships & Dating, Womens Interests, Science and 3 other categories.
TruEffect is leading in most countries, including United States, United Kingdom, Canada, Italy and 18 other countries.
Vertster is leading in Australia and Slovenia.