APSIS is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
iContact has better usage coverage in more websites categories. Including Business & Industry, People & Society, Arts & Entertainment, Shopping and 122 other categories.
APSIS is leading in Marketing & Advertising, Science, Social Sciences, Autos & Vehicles and 39 other categories.
iContact is leading in most countries, including United States, Canada, United Kingdom, India and 58 other countries.
APSIS is leading in Sweden, Denmark, Norway, Finland and 23 other countries.