In terms of market share, Fathom SEO is clearly lagging behind, losing to KeywordMax in all segments.
KeywordMax has better usage coverage in more websites categories. Including Business & Industry, People & Society, Shopping, Health and 60 other categories.
Fathom SEO is leading in Senior Health, Industrial Goods & Services, Fitness, Consumer Electronics and one other category.
KeywordMax is leading in most countries, including United States, United Kingdom, Spain, Canada and 13 other countries.
Fathom SEO is leading in South Africa and Mexico.