Impresiones Web is leading in Top 1M Sites.
Impresiones Web has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Adult, Music & Audio and 58 other categories.
Visible Measures hasn't got a lead over Impresiones Web in any websites category.
Impresiones Web is leading in most countries, including Spain, Mexico, Argentina, Peru and 52 other countries.
Visible Measures is leading in Czech Republic.