APSIS is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
iContact has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Shopping, Health and 115 other categories.
APSIS is leading in Business & Industry, Science, Marketing & Advertising, Social Sciences and 45 other categories.
iContact is leading in most countries, including United States, United Kingdom, Canada, India and 44 other countries.
APSIS is leading in Sweden, Denmark, Norway, Finland and 31 other countries.