Sentry

Track errors, performance traces and user sessions across your stack.

errorstracing

Websitesentry.dev

CategoryMonitoring

PricingFreemium

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ABOUT

What is Sentry?

Sentry is an error tracking and performance monitoring platform that captures exceptions, stack traces, performance spans and user sessions across frontend, backend and mobile applications. It provides real-time visibility into production errors with context on the user, environment and code path. The free Developer tier covers individual developers and small projects.

BEFORE YOU SIGN UP

What you should know

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Exceptional SDK ecosystemSentry provides official SDKs for virtually every language and framework, from JavaScript and Python to Rust and Unity, with consistent APIs across platforms.

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Smart error groupingThe fingerprinting algorithm groups related errors into issues, reducing noise and helping teams focus on root causes instead of individual occurrences.

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Performance monitoring has a learning curveSetting up distributed tracing and custom spans requires manual instrumentation in many cases and the performance product has more complexity than error tracking alone.

Costs add up at scaleThe free tier caps at 5k errors and 5M spans per month. Teams with high-traffic applications can exceed these limits quickly and paid plans are priced per event.

COMMUNITY

From the forums

Sentry has strong adoption across the developer community, with frequent mentions on r/webdev as the default choice for error monitoring in open-source projects. The breadth of SDK support and the quality of issue grouping are consistently praised. Common criticisms include the complexity of the performance monitoring setup and the cost scaling for teams that exceed the free tier limits, particularly for large numbers of spans.

— Community sentiment · Reddit

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ABOUT US

Honest, independent, no fluff.

No paid placements. Just a clear look at what this does, what it costs, and what to know before you commit.

FAQ

Questions, answered.

Can I use Sentry for free in production?＋

Yes, the free Developer plan includes 5k errors, 5M spans and 50 replays per month, which is sufficient for low-traffic applications and personal projects.

Does Sentry support mobile applications?＋

Yes, Sentry provides native SDKs for iOS, Android, React Native, Flutter and Unity, with support for crash reporting, performance tracing and user sessions.

How does Sentry compare to Rollbar or Bugsnag?＋

Sentry offers a broader feature set including performance tracing, session replay and a more generous free tier. Rollbar and Bugsnag are simpler but may be preferred for teams that want a lightweight error tracker.