Ad Butler is leading in Top 100K Sites and Top 1M Sites.
Smowtion has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Internet & Telecom, Business & Industry and 79 other categories.
Ad Butler is leading in Sports, Food & Drink, Cooking & Recipes, Travel and 50 other categories.
Smowtion is leading in most countries, including Argentina, Spain, India, Mexico and 96 other countries.
Ad Butler is leading in United States, United Kingdom, Canada, Australia and 24 other countries.