actionkit is leading in Top 100K Sites and Top 1M Sites.
actionkit has better usage coverage in more websites categories. Including Law & Government, Community & Society, News & Media, Pets & Animals and 10 other categories.
SparkInfluence is leading in Health and Sports.
actionkit is leading in most countries, including United States, Canada, France, Australia and 13 other countries.
SparkInfluence is leading in Japan and Romania.