PostHog is an open-source product analytics platform — event tracking, session replay, feature flags, A/B testing, and experiments. StoreVitals monitors ecommerce-specific site health across SEO, security, performance, and accessibility.
PostHog and StoreVitals address fundamentally different problems. PostHog is a product analytics platform — best when you need to understand user behavior, feature adoption, conversion funnels, and run experiments. It's especially well-suited to ecommerce teams with strong engineering capabilities who want a unified analytics + experimentation + replay platform. StoreVitals is a vertical ecommerce site health monitor — it doesn't replace product analytics, it ensures the technical foundation under the analytics is sound. The pairing works well: PostHog tracks behavior and runs experiments; StoreVitals catches the technical regressions (broken links, schema errors, performance regressions) that would skew the data PostHog is collecting. The free <a href='/tools/third-party-scripts'>Third-Party Scripts Checker</a> identifies PostHog's script and measures its impact on Core Web Vitals.