JustAnalytics vs Sentry: A Detailed Feature Comparison
An honest, detailed comparison of JustAnalytics and Sentry for error tracking, performance monitoring, and session replay. We break down features, pricing, and trade-offs.
Why Compare?
Sentry is the industry standard for error tracking. It's battle-tested, has excellent language support, and an enormous community. If you're evaluating JustAnalytics as an alternative, you deserve an honest comparison that acknowledges both strengths and trade-offs.
This isn't a "we're better at everything" post. It's a genuine breakdown to help you decide which tool fits your needs.
Feature Comparison
Error Tracking
| Feature | JustAnalytics | Sentry |
|---|---|---|
| JavaScript error capture | Yes | Yes |
| Stack trace deobfuscation | Yes | Yes |
| Source map upload | Yes | Yes |
| Error grouping | Basic (fingerprint) | Advanced (ML-based) |
| Issue workflow (resolve/ignore) | Yes | Yes |
| Release regression detection | Yes | Yes |
| Breadcrumbs | Yes | Yes |
| Custom context/tags | Yes | Yes |
| Server-side error tracking | Node.js | 30+ languages |
Verdict: Sentry wins on language coverage and error grouping sophistication. JustAnalytics covers the core error tracking workflow well for JavaScript and Node.js applications.
Performance Monitoring
| Feature | JustAnalytics | Sentry |
|---|---|---|
| Web Vitals (LCP, FID, CLS) | Yes | Yes |
| Distributed tracing | Yes (W3C) | Yes (Sentry protocol) |
| Service map | Yes | Yes |
| Transaction/span waterfall | Yes | Yes |
| APM dashboard | Yes | Yes |
| Database query tracking | PostgreSQL, Redis | Many databases |
| Custom spans | Yes | Yes |
Verdict: Comparable for most use cases. Sentry supports more database drivers. JustAnalytics uses standard W3C Trace Context headers, making it interoperable with other tracing tools.
Session Replay
| Feature | JustAnalytics | Sentry |
|---|---|---|
| DOM recording | Yes | Yes |
| Console capture | Yes | Yes |
| Network capture | Yes | Yes |
| Click tracking | Yes | Yes |
| Privacy masking | Basic | Advanced |
| Replay linked to errors | Yes | Yes |
| Replay search/filter | Yes | Yes |
Verdict: Both offer solid session replay. Sentry's privacy masking is more granular with element-level controls.
Where JustAnalytics Goes Further
Here's what JustAnalytics offers that Sentry does not:
Web Analytics (GA4 Replacement)
JustAnalytics includes a full web analytics suite:
- Real-time visitor dashboard
- Traffic source breakdown (referrers, UTM campaigns)
- Geographic and device analytics
- Top pages and entry/exit analysis
- Session duration and bounce rate
- Conversion funnels and goal tracking
- Cohort retention analysis
- User path exploration
- Attribution modeling (first-touch, last-touch, linear, time-decay)
- User segmentation with behavioral rules
- Custom dimensions and metrics
With Sentry, you still need Google Analytics (or Plausible, or PostHog) for these features.
Infrastructure Monitoring
JustAnalytics collects server-side infrastructure metrics:
- CPU and memory utilization
- Event loop lag (Node.js)
- Custom metrics via the SDK
- Infrastructure dashboard with historical charts
- Alert rules on any metric
With Sentry, you'd need Datadog, New Relic, or Prometheus for this.
Uptime Monitoring
JustAnalytics includes built-in uptime monitoring:
- HTTP/HTTPS/TCP checks
- Multi-region monitoring (4 regions)
- Configurable intervals (1-30 minutes)
- Incident timeline and status history
- Uptime percentage tracking
With Sentry, you'd need Pingdom, UptimeRobot, or Better Uptime.
Log Aggregation
JustAnalytics collects and indexes structured logs:
- Log levels (debug, info, warn, error, fatal)
- Full-text search
- Log-to-trace correlation
- Structured metadata fields
- Retention policies
With Sentry, you'd need Datadog Logs, Logtail, or the ELK stack.
Where Sentry Wins
Let's be fair about Sentry's strengths:
Language Support
Sentry supports 30+ languages and frameworks including Python, Ruby, Java, Go, PHP, .NET, Rust, Swift, Kotlin, and more. JustAnalytics currently supports JavaScript (browser) and Node.js server-side.
If your stack includes Python backends, mobile native apps, or non-Node.js services, Sentry has much broader coverage.
Error Grouping Intelligence
Sentry's ML-based error grouping is genuinely best-in-class. It learns from millions of projects to group similar errors intelligently. JustAnalytics uses fingerprint-based grouping which works well but requires more manual tuning for complex cases.
Ecosystem and Integrations
Sentry integrates with everything: Jira, Linear, Slack, PagerDuty, GitHub, GitLab, Bitbucket, Vercel, AWS Lambda, and dozens more. JustAnalytics currently supports email and push notifications for alerts.
Community and Documentation
Sentry has years of community content, StackOverflow answers, blog posts, and open-source contributions. As a newer platform, JustAnalytics is still building its knowledge base.
Pricing Comparison
| JustAnalytics Free | JustAnalytics Pro | Sentry Developer | Sentry Team | Sentry Business | |
|---|---|---|---|---|---|
| Price | $0/mo | $49/mo | $0/mo | $26/mo | $80/mo |
| Events | 100K/mo | 1M/mo | 5K/mo | 50K/mo | 100K/mo |
| Error tracking | Yes | Yes | Yes | Yes | Yes |
| Web analytics | Yes | Yes | No | No | No |
| APM/Tracing | No | Yes | Limited | Yes | Yes |
| Session replay | No | Yes | No | 50 replays | 500 replays |
| Uptime monitoring | No | Yes | No | No | No |
| Log management | No | Yes | No | No | No |
| Infra metrics | No | Yes | No | No | No |
| Alerts | No | Yes | No | Yes | Yes |
| Sites | 1 | 5 | 1 | Unlimited | Unlimited |
| Retention | 6 months | 2 years | 30 days | 90 days | 90 days |
Key takeaway: At $49/month, JustAnalytics Pro replaces what would cost $150-300+/month across Sentry Team + Google Analytics 360 + a log management tool + an uptime service.
When to Choose JustAnalytics
JustAnalytics is the better choice when:
- You want one dashboard for analytics, errors, traces, logs, and uptime
- Your stack is JavaScript/Node.js focused
- Privacy compliance is a priority (cookieless, GDPR-ready)
- You want to reduce tool sprawl and vendor costs
- You need web analytics alongside error tracking
- You prefer a lightweight script (under 5KB vs Sentry's ~30KB+)
When to Choose Sentry
Sentry is the better choice when:
- You need support for Python, Ruby, Java, Go, or other non-JS languages
- Advanced error grouping is critical for your error volume
- You need deep integrations with Jira, Linear, PagerDuty, etc.
- You're already invested in the Sentry ecosystem
- You need on-premise/self-hosted deployment
The Bottom Line
Sentry is an excellent, mature error tracking platform. If error tracking in multiple languages is your primary need, it's hard to beat.
But if you're a JavaScript/Node.js team that's tired of juggling five separate monitoring tools, JustAnalytics offers a compelling alternative: one platform, one price, one dashboard for everything.
Try JustAnalytics free -- no credit card required.
Founder of JustAnalytics and CEO of Velocity Digital Labs LLC. Building the future of privacy-first observability.
@rajatpratapsingh