PostHog
Sentry
| Feature | PostHog | Sentry |
|---|---|---|
| Pricing | Free / from $0/mo | Free / from $26/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | developers, startups, product-teams, privacy-conscious-companies | developers, frontend-teams, mobile-developers, startups |
| Founded | 2020 | 2012 |
| Product Analytics | ✓ | ✗ |
| Session Replay | ✓ | ✓ |
| Feature Flags | ✓ | ✗ |
| Experiments | ✓ | ✗ |
| Surveys | ✓ | ✗ |
| Data Warehouse | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Error Tracking | ✗ | ✓ |
| Performance Monitoring | ✗ | ✓ |
| Source Maps | ✗ | ✓ |
| Release Tracking | ✗ | ✓ |
| Alerting | ✗ | ✓ |
| Integrations | ✗ | ✓ |
| Issue Triaging | ✗ | ✓ |
✓ PostHog Pros
- All-in-one analytics replacing multiple tools
- Generous free tier (1M events/month)
- Self-hostable for full data control
- Feature flags and experiments built-in
✗ PostHog Cons
- Can be complex to set up properly
- Self-hosting requires infrastructure maintenance
- Less polished UI than Amplitude
✓ Sentry Pros
- Excellent error tracking with full stack traces
- Source map support for minified code
- Session replay shows exactly what users experienced
- Open-source self-hosted option available
- Supports 100+ platforms and frameworks
✗ Sentry Cons
- Event quotas can be exceeded during incidents
- Alert fatigue if not properly configured
- Performance monitoring less mature than Datadog
The Verdict
PostHog is built for developers and startups, with a focus on product-analytics and session-replay. Sentry targets developers and frontend teams and leads with error-tracking and performance-monitoring.
On pricing, PostHog is the clear winner for budget-conscious users — starting at $0/mo compared to $26/mo for Sentry. That $26/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Sentry offers broader built-in capabilities (8 features vs 7), while PostHog takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for developers, startups — 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.