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, Business & Industry, News & Media, Music & Audio and 102 other categories.
Observer is leading in Running and Web Design.
Meetrics is leading in most countries, including Germany, Poland, Sweden, Austria and 36 other countries.
Observer is leading in Chile and Brazil.