In terms of market share, Fathom SEO is clearly lagging behind, losing to SearchRev in all segments.
SearchRev has better usage coverage in more websites categories. Including Shopping, Business & Industry, People & Society, Arts & Entertainment and 48 other categories.
Fathom SEO is leading in Senior Health, Industrial Goods & Services, Computer & Electronics, Software and 5 other categories.
SearchRev is leading in most countries, including United States, Korea Republic, Brazil, United Kingdom and 11 other countries.
Fathom SEO hasn't got a lead over SearchRev in any country.