Ad Butler is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ad Butler has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, News & Media, Sports and 151 other categories.
Pirchio is leading in Humor.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Belarus and 76 other countries.
Pirchio is leading in Italy, Kyrgyzstan, Bahrain and Azerbaijan.