FullStory
Splunk
| Feature | FullStory | Splunk |
|---|---|---|
| Pricing | Free only | Contact sales |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.4 / 5 | 4.3 / 5 |
| Best For | product-teams, ux-designers, enterprise-apps, conversion-optimization | enterprise, security-teams, devops-engineers, data-analysts |
| Founded | 2014 | 2003 |
| Session Replay | ✓ | ✗ |
| Heatmaps | ✓ | ✗ |
| Product Analytics | ✓ | ✗ |
| Error Tracking | ✓ | ✗ |
| Frustration Signals | ✓ | ✗ |
| User Journeys | ✓ | ✗ |
| Data Export | ✓ | ✗ |
| Log Analysis | ✗ | ✓ |
| Real Time Monitoring | ✗ | ✓ |
| Dashboards | ✗ | ✓ |
| Alerting | ✗ | ✓ |
| Machine Learning | ✗ | ✓ |
| Siem | ✗ | ✓ |
✓ 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
✓ Splunk Pros
- Powerful search capabilities
- Real-time monitoring
- Extensive app ecosystem
- Enterprise-grade
✗ Splunk Cons
- Very expensive
- Complex pricing
- Resource-intensive
The Verdict
FullStory is built for product teams and ux designers, with a focus on session-replay and heatmaps. Splunk targets enterprise and security teams and leads with log-analysis and real-time-monitoring.
Both tools use custom enterprise pricing — you'll need to contact sales for a quote, which makes direct cost comparison difficult.
FullStory has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. Splunk requires a paid subscription from day one.
Feature-wise, FullStory offers broader built-in capabilities (7 features vs 6), while Splunk takes a more focused approach — which can mean a simpler, faster onboarding experience.
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.