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PostHog

An open-source product analytics platform that combines user behavior tracking, feature flags, and session recordings in one solution.

Our take: PostHog is a developer-first product analytics platform with a generous free tier (1M events/mo) and usage-based paid pricing.

Best forDevelopers
ReviewedPricing: Freemium
8.3 out of 105 criteria · see breakdown
Try PostHogFree up to 1M events/mo; paid usage-based
The bottom line

The most complete free-to-start product analytics stack available — feature flags, session replay, and A/B testing all under one roof.

Our score

Reviewed by the Conversion Gems editorial team. Hover a facet to focus it; click to pin.Tap a facet to focus it.

Community ratings

Shown for context only. Our score is independent.

G2
4.5 out of 5
1,000+ reviews

4.5 / 5 aggregate · across 1 source

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it is, and why we rate it

One line each. Open a row for detail.

What it really isPostHog — open-source product analytics suite with session replay, feature flags, A/B testing, and more.
Our takePostHog is a developer-first product analytics platform with a generous free tier (1M events/mo) and usage-based paid pricing.
It is a product analytics and developer tool. Self-hosting is available via the OSS build, but the hosted Cloud product is what most teams use, with 90%+ of companies staying on the free tier.
Why we rate itRare combination of open-source transparency, a cloud product with a permanently generous free tier, and a breadth of features that would cost thousands per month if assembled from Mixpanel + LaunchDarkly + FullStory separately.
The catchSelf-hosting requires real DevOps capacity.
Usage-based cloud costs can surprise teams once they cross the free-tier thresholds at scale. Some features (mobile replay, advanced warehouse sync) are less mature than dedicated point solutions.

Best / not good for

Best for
  • Startups and scale-ups wanting all-in-one analytics without per-seat fees
  • Engineering-led teams who want to self-host for data sovereignty or compliance
  • Product teams replacing a fragmented Mixpanel + LaunchDarkly + FullStory stack
Not good for
  • Non-technical marketing teams expecting a no-code analytics setup
  • Very large enterprises needing certified on-prem support out of the box
  • Teams that only need lightweight page-view analytics and nothing more
Trade-offs

Friction report

Trade-offs to know before signing up.

  1. Time to value
    Fast: PostHog's autocapture SDK starts recording events with a single script tag; first funnel or replay visible within minutes of install.
  2. Scale breakpoint
    Usage-based billing can escalate quickly past ~5M events/mo; self-hosted ops complexity grows significantly beyond a single-server deployment.
  3. Walled garden
    Low: MIT-licensed OSS core, full data export, warehouse sync, and self-hosting mean you are never locked into PostHog's cloud.
Still a fit?
If none of these block you, start on the free plan.
Try PostHog

A look inside

PostHog product screenshot

Frequently Asked Questions

What is PostHog and what is it used for?

PostHog is an open-source product analytics platform that helps teams track, analyze, and understand user behavior across websites and applications. It allows businesses to capture events, analyze user journeys, and measure feature usage so they can make informed, data-driven product decisions without relying solely on third-party analytics tools.

How is PostHog different from traditional analytics tools?

Unlike many traditional analytics platforms, PostHog offers full control over data, including the option to self-host. It combines product analytics, feature flags, session recordings, and A/B testing in one platform, reducing the need for multiple tools and giving teams a more complete view of user behavior.

Can PostHog be self-hosted and how does that benefit teams?

Yes, PostHog can be self-hosted, which is a major advantage for teams with strict data privacy or security requirements. Self-hosting allows organizations to store and manage their data on their own infrastructure, maintain full ownership, and meet internal or regulatory compliance standards.

What insights can teams gain from using PostHog?

PostHog helps teams identify user behavior trends, feature adoption rates, funnel drop-offs, and retention patterns. With tools like event-based analytics and session recordings, teams can understand how users interact with specific features and where improvements are needed to enhance engagement and conversion.

Who is PostHog best suited for?

PostHog is well-suited for product-led teams, startups, and engineering-focused organizations that want flexibility and transparency in their analytics stack. It is especially valuable for teams that prefer open-source tools and need advanced product analytics without vendor lock-in.

Alternatives

  • Step up

    PostHog Scale ($750/mo) or Enterprise ($2,000/mo) for SSO, priority support, and compliance controls.

  • Lighter alternative

    Plausible Analytics for simple, privacy-first page-view analytics without the full product analytics stack.

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Tags

#ProductAnalytics#Tracking#OpenSource

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