Harren Media is leading in Top 100K Sites and Top 1M Sites.
Harren Media has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, TV & Video, Movies and 51 other categories.
Spark Studios is leading in Antiques & Collectibles, Beauty & Fitness, Weight Loss, Energy and 3 other categories.
Harren Media is leading in most countries, including Brazil, Mexico, Spain, Russia and 26 other countries.
Spark Studios is leading in United States.