There are several effective SEO apps available for Shopify. We often recommend using apps like SEO Manager, Plug in SEO, and Smart SEO for their comprehensive features. These apps offer functionalities such as optimizing meta titles, descriptions, and URLs, generating XML sitemaps, managing redirects, optimizing product pages, and providing actionable insights to improve site SEO. Additionally, integrating Google Analytics and Google Search Console with Shopify is crucial for tracking website performance and identifying optimization opportunities.