Heap vs PostHog — Which One Wins?
A detailed, side-by-side comparison of Heap and PostHog to help you pick the right tool for your workflow.
Quick Verdict
PostHog takes the lead with a 4.5 rating and is best for startups wanting product analytics, session replay, and feature flags in one open-source platform.. Heap (4.2) is the better pick if you need teams without analytics engineering resources who want comprehensive product analytics..
Side-by-Side Comparison
| Criteria | Heap | PostHog |
|---|---|---|
| Rating | ★★★★ 4.2(123) | ★★★★ 4.5(167) |
| Pricing Model | freemium | open_source |
| Starter Price | Custom pricing (Growth) | Pay-as-you-go above free limits |
| Free Tier | Yes | Yes |
| Platforms | web | web |
| Learning Curve | medium | medium |
| API Available | Yes | Yes |
| Best For | Teams without analytics engineering resources who want comprehensive product analytics. | Startups wanting product analytics, session replay, and feature flags in one open-source platform. |
| Verdict | situational | recommended |
Feature Checklist
| Feature | Heap | PostHog |
|---|---|---|
| Automatic event capture | — | |
| Retroactive analytics | — | |
| Funnel and retention analysis | — | |
| Session replay | ||
| Effort analysis (friction detection) | — | |
| Journey mapping | — | |
| Product analytics | — | |
| Feature flags | — | |
| A/B testing | — | |
| Surveys | — | |
| Self-hostable open source | — |
Heap
Pros
- ✓Auto-capture means no manual event tracking required
- ✓Retroactive analysis answers questions you did not anticipate
- ✓Effort analysis automatically finds high-friction flows
Cons
- ✕Opaque pricing with no self-serve plans
- ✕Auto-capture can capture noisy, irrelevant data
- ✕Less precise than manual instrumentation for specific use cases
PostHog
Pros
- ✓All-in-one replaces 4-5 separate tools
- ✓Open source with free self-hosting
- ✓Cloud free tiers are genuinely generous
Cons
- ✕Individual analytics less powerful than dedicated Mixpanel/Amplitude
- ✕Session replay less polished than FullStory
- ✕Self-hosting requires infrastructure management
The Bottom Line
Both Heap and PostHog are solid tools in the Analytics & Data space. PostHog edges ahead with a stronger overall rating (4.5 vs 4.2) and is the better choice for startups wanting product analytics, session replay, and feature flags in one open-source platform.. However, if you prioritize teams without analytics engineering resources who want comprehensive product analytics., Heap is worth serious consideration. We recommend trying the free tier or trial of each before committing.