In terms of market share, Unister is clearly lagging behind, losing to Vertical Leap in all segments.
Unister has better usage coverage in more websites categories. Including Travel, Tourism, Airlines & Airports, Sports and 4 other categories.
Vertical Leap hasn't got a lead over Unister in any websites category.
Unister is leading in most countries, including Germany, Switzerland, Austria, France and one other country.
Vertical Leap is leading in United Kingdom.