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 23 other categories.
Blueshift is leading in Shopping, Career & Education, Real Estate, Coupons and 13 other categories.
Blueshift is leading in most countries, including India, United States, United Kingdom, Sweden and 9 other countries.
Observer is leading in Russia, Netherlands, Japan, Germany and 4 other countries.