In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to Unister in all segments.
Nextag ROI Optimizer has better usage coverage in more websites categories. Including Shopping, Business & Industry, Marketing & Advertising, Clothing and 20 other categories.
Unister is leading in Travel, Tourism and Airlines & Airports.
Unister is leading in most countries, including Germany, Switzerland, Austria, Turkey and 4 other countries.
Nextag ROI Optimizer is leading in United States, Australia, Ecuador, France and 2 other countries.