Opta Widget is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Vovici has better usage coverage in more websites categories. Including People & Society, Business & Industry, Career & Education, Arts & Entertainment and 60 other categories.
Opta Widget is leading in Sports, Soccer, News & Media, Sports News and 22 other categories.
Opta Widget is leading in most countries, including United Kingdom, Spain, Italy, Australia and 50 other countries.
Vovici is leading in United States, China, Canada, India and 12 other countries.