In terms of market share, Fathom SEO is clearly lagging behind, losing to PriceGrabber in all segments.
Fathom SEO has better usage coverage in more websites categories. Including Business & Industry, Health, Senior Health, Industrial Goods & Services and 18 other categories.
PriceGrabber is leading in Shopping, Marketing & Advertising, Computer Hardware, Computer Security and 5 other categories.
PriceGrabber is leading in most countries, including Canada, Argentina, Russia, Spain and one other country.
Fathom SEO is leading in United States, Australia, Nigeria and Brazil.