ConvertKit is leading in Top 100K Sites and Top 1M Sites.
ConvertKit has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Internet & Telecom, Food & Drink and 80 other categories.
Responder is leading in Business & Industry, Health, Shopping, Business Services and 33 other categories.
ConvertKit is leading in most countries, including United States, United Kingdom, Canada, India and 59 other countries.
Responder is leading in Israel and Ukraine.