Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Tremor Media has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Music & Audio and 27 other categories.
Optimatic is leading in Games, Business & Industry, Internet & Telecom, Online and 23 other categories.
Tremor Media is leading in most countries, including United States, Japan, China, United Kingdom and 13 other countries.
Tremor Media is leading in United States, Japan, China, United Kingdom and 13 other countries.