Google Analytics 4
PartialFree but learning-curve-heavy site analytics
GA4 succeeded Universal Analytics with an event-based model. Strengths: free + tight inte…
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Good for
- Teams that prefer to self-host and own their data
- High-event-volume SaaS that needs the full product analytics suite
- Frontend teams using session replay to debug
Not good for
- Marketing-heavy ecommerce needing tight ad integration
- Teams allergic to ops (although the cloud is fine for them)
Integration effort
JS SDK with a few lines of code; web, iOS, Android, and server clients available.
KYC and entity
None.
Payouts to China
N/A.
Privacy / compliance notes
Cloud data hosted in US or EU; self-hosted is fully under your control.
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Summary
PostHog combines product analytics, feature flags, session replay, A/B testing, and surveys into a single open-source platform. The cloud version offers 1M events/month free; the self-hosted edition is fully free.