ConvertKit is leading in Top 100K Sites and Top 1M Sites.
ConvertKit has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Internet & Telecom, Food & Drink and 90 other categories.
Responder is leading in Business & Industry, Health, Shopping, Business Services and 28 other categories.
ConvertKit is leading in most countries, including United States, United Kingdom, Canada, Australia and 69 other countries.
Responder is leading in Israel and Slovakia.