In terms of market share, Observer is clearly lagging behind, losing to PercentMobile in all segments.
PercentMobile has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Shopping and 48 other categories.
Observer is leading in Computer & Electronics, Software, Photography, Transportation & Logistics and 6 other categories.
PercentMobile is leading in most countries, including United States, Indonesia, India, Germany and 24 other countries.
Observer is leading in United Kingdom, Russia, Poland, Finland and one other country.