Blueshift is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Observer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Computer & Electronics, Internet & Telecom and 21 other categories.
Blueshift is leading in Shopping, Career & Education, Education, Real Estate and 16 other categories.
Blueshift is leading in most countries, including India, United States, Great Britain, Sweden and 12 other countries.
Observer is leading in Russia, Germany, Montenegro, Netherlands and 11 other countries.