SEO Site Checkup is a popular freemium SEO audit tool that gives you a one-time SEO report card for any URL. StoreVitals is a hosted ecommerce health monitoring platform that runs scheduled scans, tracks scores over time, and includes security, accessibility, and platform-specific checks SEO Site Checkup doesn't cover.
SEO Site Checkup is a strong general-purpose SEO audit tool, particularly for solo consultants and small agencies who want a single report card to share with clients. StoreVitals is purpose-built for ecommerce: platform detection, structured data validation, accessibility audits, and a 5-pillar scoring system that maps to the things online stores actually need to monitor. If you run a generic blog or marketing site, SEO Site Checkup is a fine choice. If you run a Shopify, WooCommerce, BigCommerce, Magento, or custom ecommerce store, StoreVitals catches issues SEO Site Checkup doesn't look for — and runs them on a schedule with notification channels built in.