kallyas vs twentytwentyone

twentytwentyone is used by more websites in our catalog: 155 use kallyas and 655 use twentytwentyone.

kallyas and twentytwentyone sites have a similar median Ahrefs Domain Rating.

Between 2026-06 and 2026-07, kallyas went from 0.02% to 0.02% of all tracked sites, while twentytwentyone went from 0.08% to 0.07%. kallyas is gaining ground faster in our index.

No. A site runs a single WordPress theme, so kallyas and twentytwentyone 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.