In terms of market share, HitSniffer is clearly lagging behind, losing to Vizu in all segments.
HitSniffer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Shopping and 105 other categories.
Vizu is leading in TV & Video, Video Games, Games, Search Engine and 4 other categories.
HitSniffer is leading in most countries, including United States, Australia, United Kingdom, India and 70 other countries.
Vizu is leading in Sierra Leone.