Meetrics is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Meetrics has better usage coverage in more websites categories. Including Arts & Entertainment, News & Media, Sports, Business & Industry and 77 other categories.
Observer is leading in Computer & Electronics, Software, Photography, Visual Arts & Design and 5 other categories.
Meetrics is leading in most countries, including Germany, Poland, Austria, France and 17 other countries.
Observer is leading in Russia, Canada, Japan, Israel and one other country.