In terms of market share, Fathom SEO is clearly lagging behind, losing to Genius in all segments.
Genius has better usage coverage in more websites categories. Including Business & Industry, Real Estate, Computer & Electronics, Marketing & Advertising and 60 other categories.
Fathom SEO is leading in Senior Health, Industrial Goods & Services, Fitness, Adult and 3 other categories.
Genius is leading in most countries, including United States, United Kingdom, Russia, France and 23 other countries.
Fathom SEO hasn't got a lead over Genius in any country.