PostHog vs Amplitude

Free tier available

Free tier available

Usage-based pricing per product with a substantial free tier; most small teams stay free indefinitely.

Paid plans are quote-based on monthly tracked users and events; enterprise contracts are substantial.

Large monthly free allowance across every product, plus free self-hosting.

Free plan with a monthly event allowance suitable for early-stage products.

Widely used

PostHog · since 2020

Category standard

Amplitude · since 2012

• Replaces four or five separate subscriptions with one bill and one SDK.
• Free tier is large enough for real production use at startup scale.
• Open source with a credible self-hosting path.

• The deepest retention and cohort analysis in mainstream product analytics.
• Good free tier for early-stage products.
• Strong data-governance tooling for event taxonomy.

• Individual modules are less deep than category specialists.
• Self-hosting at scale is a serious infrastructure undertaking.
• The product surface changes fast, which means occasional churn.

• Requires deliberate event instrumentation — nothing works without it.
• Enterprise pricing rises steeply with tracked users.
• Replay and experimentation are newer and less mature than the analytics core.

Startups and scale-ups consolidating analytics, replay and flags into one platform.

Product teams that need rigorous behavioural analysis over time.