Unister is leading in Top 100K Sites and Top 1M Sites.
Webclicktracker has better usage coverage in more websites categories. Including Business & Industry, Industrial Goods & Services, Shopping, Construction & Maintenance and 25 other categories.
Unister is leading in Travel, Tourism, Sports and Airlines & Airports.
Webclicktracker is leading in most countries, including United States, China, Canada, Taiwan and 5 other countries.
Unister is leading in Germany, Austria, Switzerland and Poland.