SimilarSites Pro (com.similarsites.similarsitesapp) on Google Play
SimilarSites Pro is a powerful recommendation engine that analyzes a site's content and suggests similar ones. Just enter a domain and SimilarSites Pro will deliver a list of up to 20 related sites. SimilarSites Pro maps over 30 million domains to identify and rank website similarity based on content, keywords, traffic and other parameters.