hello-theme-child-master vs understrap

hello-theme-child-master is used by more websites in our catalog: 1,201 use hello-theme-child-master and 103 use understrap.

understrap sites have the higher median Ahrefs Domain Rating (hello-theme-child-master: 28, understrap: 31).

Between 2026-06 and 2026-07, hello-theme-child-master went from 0.15% to 0.14% of all tracked sites, while understrap went from 0.01% to 0.01%. understrap is gaining ground faster in our index.

No. A site runs a single WordPress theme, so hello-theme-child-master and understrap are mutually exclusive.

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.