Ion Interactive is leading in Top 100K Sites.
Ion Interactive has better usage coverage in more websites categories. Including Games, Business & Industry, Video Games, Health and 30 other categories.
ReadZ hasn't got a lead over Ion Interactive in any websites category.
Ion Interactive is leading in most countries, including United States, Canada, Germany, United Kingdom and 13 other countries.
ReadZ is leading in Ukraine, Spain, Belgium, Bahrain and one other country.