FullStory
Heap
| Feature | FullStory | Heap |
|---|---|---|
| Pricing | Free only | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.3 / 5 |
| Best For | product-teams, ux-designers, enterprise-apps, conversion-optimization | product-teams, growth-marketers, ux-researchers, saas-companies |
| Founded | 2014 | 2013 |
| Session Replay | ✓ | ✓ |
| Heatmaps | ✓ | ✗ |
| Product Analytics | ✓ | ✗ |
| Error Tracking | ✓ | ✗ |
| Frustration Signals | ✓ | ✗ |
| User Journeys | ✓ | ✗ |
| Data Export | ✓ | ✗ |
| Auto Capture | ✗ | ✓ |
| Funnel Analysis | ✗ | ✓ |
| Retention Analysis | ✗ | ✓ |
| User Segments | ✗ | ✓ |
| Data Science | ✗ | ✓ |
| Integrations | ✗ | ✓ |
✓ FullStory Pros
- High-fidelity session replay with DOM rendering
- AI-powered insights surface frustration signals
- Combines qualitative and quantitative analytics
- Privacy-first with PII exclusion controls
✗ FullStory Cons
- Expensive for high-traffic sites
- Free plan limited to 1,000 sessions/month
- Can slow page performance with full recording
✓ Heap Pros
- Auto-captures all user interactions without code
- Retroactive analysis (define events after the fact)
- Session replay integrated with analytics
- No engineering resources needed for tracking
✗ Heap Cons
- Pricing not transparent (sales-required for growth+)
- Can generate excessive data requiring cleanup
- UI can feel slower than event-based alternatives
The Verdict
FullStory is built for product teams and ux designers, with a focus on session-replay and heatmaps. Heap targets product teams and growth marketers and leads with auto-capture and session-replay.
Both tools use custom enterprise pricing — you'll need to contact sales for a quote, which makes direct cost comparison difficult.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Both tools are a solid fit for product teams — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.