HitSniffer is leading in Top 1M Sites.
HitSniffer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Health and 92 other categories.
Observer is leading in Running.
HitSniffer is leading in most countries, including United States, United Kingdom, Australia, India and 65 other countries.
Observer hasn't got a lead over HitSniffer in any country.