In terms of market share, Unister is clearly lagging behind, losing to WordStream in all segments.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 57 other categories.
Unister is leading in Travel, Tourism and Airlines & Airports.
WordStream is leading in most countries, including United States, United Kingdom, Australia, Mexico and 9 other countries.
Unister is leading in Germany, Switzerland and Austria.