Compare pricing, deployment, product fit, integrations, and capabilities side by side.
Catalog capabilities may require a paid plan, add-on or hosted edition. “Not listed” means unverified here, not unavailable. Confirm the exact edition, usage limits and privacy settings.
Starting prices use different billing periods and usage units. Compare the same traffic, events, retention and seats.
Choose FullStory ifMid-to-large product teams and UX researchers
Important considerations: Free excludes advanced dashboards, StoryAI, mobile capture, and configurable privacy; paid pricing is quote-based.
Choose PostHog ifDevelopers and product teams who want analytics, replay, experimentation, and feature delivery in a single toolchain
Important considerations: Each cloud product is metered separately. The free MIT self-hosted deployment is officially unsupported, with no customer support or guarantees. Only free-plan features are available there; paid-plan features are Cloud-only.
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| Attribute | FullStory | PostHog |
|---|---|---|
| Overview | A digital experience analytics platform combining session replay, heatmaps, funnels, event analytics, and AI insights for both web and mobile. | A product and web analytics platform for developers that combines usage analytics, session replay, feature flags, experiments, surveys, and data tooling in one stack, with both cloud and self-hosted deployment options. |
| Pricing | Fullstory Free includes 30,000 monthly sessions and 12 months of analytics retention; Business, Advanced, and Enterprise pricing is quote-based | Cloud product analytics includes 1M events/month free, then starts at $0.00005 per event; other products have separate usage-based free tiers |
| Deployment | Vendor-hosted cloud | Self-hosted and hosted options |
| Best for | Mid-to-large product teams and UX researchers | Developers and product teams who want analytics, replay, experimentation, and feature delivery in a single toolchain |
| Operator | Fullstory, Inc. Independent private company | PostHog Inc. Independent private company |
| Company base | Atlanta, United States · United States | Distributed organization |
| Organization scale | at least 200 employees · operator, as of 5 May 2020 | 215 team members · operator, as of 13 Aug 2026 |
| Recent direction | AI-assisted analysis Recent official evidence shows a focus on AI-assisted analysis. | AI-assisted analysis Recent official evidence shows a focus on AI-assisted analysis. |
| Key features |
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| Important considerations | Free excludes advanced dashboards, StoryAI, mobile capture, and configurable privacy; paid pricing is quote-based. | Each cloud product is metered separately. The free MIT self-hosted deployment is officially unsupported, with no customer support or guarantees. Only free-plan features are available there; paid-plan features are Cloud-only. |
| Integrations | Segment, Salesforce, CRMs, Dev tools | Slack, Zapier, Segment |
| Fact check | We checked this information against official vendor sources on 2026-08-08. | We checked this information against official vendor sources on 2026-09-30. |
This matrix shows capabilities recorded in our catalog. Not listed means we have not confirmed the capability here. Check the linked vendor sources for plan, deployment, and usage limits.
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| Attribute | FullStory | PostHog |
|---|---|---|
| A/B testing | Not listed | Listed |
| AI insights | Listed | Listed |
| App analytics | Listed | Listed |
| Audience insights | Listed | Listed |
| Behavior analytics | Listed | Listed |
| CCPA compliant | Listed | Not listed |
| Cohort analysis | Listed | Listed |
| Cross-device tracking | Listed | Not listed |
| Custom reports | Listed | Listed |
| Data export | Listed | Listed |
| Data ownership | Not listed | Listed |
| E-commerce tracking | Listed | Listed |
| Enterprise | Not listed | Listed |
| Error tracking | Listed | Listed |
| Event tracking | Listed | Listed |
| Free plan | Listed | Listed |
| Funnels | Listed | Listed |
| GDPR compliant | Listed | Listed |
| Goals | Listed | Listed |
| Heatmaps | Listed | Listed |
| Integrations | Listed | Listed |
| Open source | Not listed | Listed |
| Real-time data | Listed | Listed |
| Retention analytics | Listed | Listed |
| Revenue tracking | Listed | Listed |
| Self-hosted | Not listed | Listed |
| Session recordings | Listed | Listed |
| Surveys | Not listed | Listed |
| User segments | Listed | Listed |