PostHog is product analytics, not marketing analytics. If you migrate from GA4 expecting better Acquisition reports, you’ll be disappointed. Migrate to PostHog when you actually need session replay + feature flags + funnels — not just because GA4 is annoying.
When PostHog is the right destination
- Product-led SaaS, mobile apps, marketplaces, dashboards
- Teams that need feature flags + experimentation as part of analytics
- Organisations that already speak in terms of cohorts, funnels, retention curves
- EU-compliant deployment (PostHog Cloud EU exists)
When PostHog is wrong
- Content/marketing sites that mostly need traffic source reports
- E-commerce that cares about merchandising analytics
- Teams without product-event taxonomy (you’d be building one before migrating)