Fathom vs Heap

Fathom is used by more websites in our catalog: 1,332 use Fathom and 476 use Heap.

Heap sites have the higher median Ahrefs Domain Rating (Fathom: 40, Heap: 45).

Between 2026-06 and 2026-07, Fathom went from 0.18% to 0.15% of all tracked sites, while Heap went from 0.07% to 0.05%. Heap is gaining ground faster in our index.

2 websites in our catalog use both Fathom and Heap.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.