Unister is leading in Top 100K Sites and Top 1M Sites.
Unister has better usage coverage in more websites categories. Including Travel, People & Society, Tourism, Relationships & Dating and 5 other categories.
Vertical Leap hasn't got a lead over Unister in any websites category.
Unister is leading in most countries, including Germany, Austria, Switzerland, China and one other country.
Vertical Leap is leading in United Kingdom.