Tailsweep is leading in Top 1M Sites.
Tailsweep has better usage coverage in more websites categories. Including Arts & Entertainment, Business & Industry, People & Society, Science and 64 other categories.
Vertical Acuity is leading in Energy.
Tailsweep is leading in most countries, including Sweden, United States, Russia, United Kingdom and 48 other countries.
Vertical Acuity hasn't got a lead over Tailsweep in any country.