Alooma is leading in Top 10K Sites and Top 100K Sites.
Vizu has better usage coverage in more websites categories. Including People & Society, News & Media, Arts & Entertainment, Technology News and 76 other categories.
Alooma is leading in Telecommunications.
Vizu is leading in most countries, including United States, India, Indonesia, Poland and 19 other countries.
Alooma hasn't got a lead over Vizu in any country.