Semrush Site Audit is one feature inside the broader Semrush SEO platform, which focuses on keyword research, rank tracking, and competitive intelligence. StoreVitals is a standalone ecommerce health monitoring tool with weekly scans, alerts, and platform-specific recommendations.
If you need a full-suite SEO platform with keyword research, rank tracking, and competitive intelligence, Semrush is the industry standard. If you only need site auditing — specifically for an ecommerce store — and you don't want to pay $140+/mo for features you won't use, StoreVitals is purpose-built for the job at a fraction of the cost. Most agencies use Semrush for research and StoreVitals for client-facing health reports.