hello-theme-child-master vs twentyfifteen

hello-theme-child-master is used by more websites in our catalog: 1,201 use hello-theme-child-master and 193 use twentyfifteen.

hello-theme-child-master sites have the higher median Ahrefs Domain Rating (hello-theme-child-master: 28, twentyfifteen: 19).

Between 2026-06 and 2026-07, hello-theme-child-master went from 0.15% to 0.14% of all tracked sites, while twentyfifteen went from 0.02% to 0.02%. twentyfifteen is gaining ground faster in our index.

No. A site runs a single WordPress theme, so hello-theme-child-master and twentyfifteen 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.