FullStory vs PostHog: Analytics Comparison (2026)
FullStory and PostHog both offer product analytics with free tiers. FullStory provides a comprehensive suite of tools for understanding user behavior with a focus on session replay and debugging. PostHog offers a platform with product analytics, session replay, feature flags, and a managed warehouse, emphasizing usage-based pricing and transparent costs.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask analytics questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
- ✓30,000 monthly sessions
- ✓12 months of analytics retention
- ✓Session Replay
- ✓Basic analytics
- ✓Debugging tools
- ✓Core capabilities for 10 users
- ✓Product Analytics: 1M events/mo free
- ✓Session Replay: 5K recordings/mo free
- ✓Feature Flags: 1M requests/mo free
- ✓Managed Warehouse: 1M rows/mo free
- ✓Usage-based pricing
- ✓No sales calls required
- ✓Generous free tiers
- ✓Single source of truth for customers
When to choose FullStory
FullStory is suitable for users who need a free tier with 30,000 monthly sessions, 12 months of analytics retention, and core capabilities for 10 users, along with a focus on debugging tools and a wide range of integrations including Data Ecosystem, Webhooks, Data Export, Consent API, FS.Identity API, and Element API.
When to choose PostHog
PostHog is suitable for users who need a free tier that includes 1 million events per month for product analytics, 5,000 recordings per month for session replay, 1 million requests per month for feature flags, and 1 million rows per month for its managed warehouse. It integrates with Stripe, error tracking tools, and support platforms, and offers usage-based pricing without requiring sales calls.
Frequently Asked Questions
AI visibility profiles
Is one of these your brand?
Get the full report by email: every analytics buyer question we ask, which engines name you, and who gets named instead.