The best GA4 alternative for software products: product analytics, web analytics, session replay, feature flags and experiments in one tool with a large free tier, but it is built for product and engineering teams, not for a marketer who only wants traffic reports.
What it is
PostHog combines product analytics (funnels, retention, paths, cohorts), web analytics, session replay, feature flags, A/B experiments, surveys, error tracking and a data warehouse. Pricing is usage-based per product with a free allowance that resets monthly: 1 million analytics events, 5,000 session recordings, 1 million feature flag requests, 100,000 exceptions and 1,500 survey responses, with no card required. Above that you pay per unit and can set billing limits per product. US or EU cloud hosting, and an open-source hobby deployment for self-hosting. Checked on posthog.com/pricing November 14, 2026.
Best for
- SaaS and app teams who need product analytics, not just traffic stats
- Engineering-led startups that want replay, flags and experiments in one place
- Teams that want an EU cloud option for product data
What we like
- Product analytics, session replay, feature flags, experiments and surveys in one tool
- Generous monthly free tier: 1 million analytics events and 5,000 recordings
- Billing limits per product to avoid surprise bills
- EU cloud option and open-source code
What to watch
- Built for product and engineering teams; marketers who just want traffic reports will find it heavy
- Usage-based pricing across many products is hard to forecast at scale
- Event tracking needs developer setup to get full value
- Self-hosting is a hobby option only, not supported for production scale
Where PostHog ranks
Alternatives and head-to-heads
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