Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Optimatic has better usage coverage in more websites categories. Including Games, Business & Industry, Internet & Telecom, Marketing & Advertising and 25 other categories.
Tremor Media is leading in Arts & Entertainment, People & Society, News & Media, Music & Audio and 25 other categories.
Optimatic is leading in most countries, including United States, Israel, India, Peru and 24 other countries.
Tremor Media is leading in Japan, China, France, Germany and 10 other countries.