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, Computer & Electronics, Arts & Entertainment, Internet & Telecom and 25 other categories.
Blueshift is leading in Shopping, Clothing, Furniture, Accommodation & Hotels and 7 other categories.
Observer is leading in most countries, including Russia, Ukraine, Brazil, Switzerland and 9 other countries.
Blueshift is leading in India, United States, Singapore, Bangladesh and one other country.