Sentry vs Bugsnag — Which Error Tracking Tool Should You Use in 2026?

TL;DR

Sentry is the full-stack observability platform — error tracking, performance monitoring, session replay, profiling, and cron monitoring in one tool. It's open-source at its core, has the broadest language support, and is the default choice for most engineering teams. Bugsnag is the focused, stability-first tool — it centers everything around application stability scores and release health, making it ideal for mobile-heavy teams and organizations that want clear stability metrics for business stakeholders.

What Is Error Tracking?

Error tracking tools capture unhandled exceptions, crashes, and errors from your applications in real-time. They group duplicate errors, provide stack traces with source context, and help you prioritize what to fix first. Both Sentry and Bugsnag do this well — but they've evolved in different directions.

Core Error Tracking

At its foundation, both tools capture errors, group them intelligently, and provide stack traces with context.

Sentry groups errors using a fingerprinting algorithm that considers stack traces, exception types, and error messages. You can customize grouping with fingerprint rules. The issue detail view shows breadcrumbs (a trail of events leading to the error), tags, user context, and the full stack trace with source code context. Sentry's "Discover" feature lets you query error data with SQL-like syntax.

Bugsnag groups errors into "error classes" and uses a stability score as its primary metric. Every error is tied to a release, and you can see how each release affects your app's stability. The error detail view shows stack traces, breadcrumbs, device info, and user data. Bugsnag's "Timeline" view shows when errors were introduced and how they trend over releases.

| Feature | Sentry | Bugsnag | |---------|--------|--------| | Error grouping | Fingerprint-based (customizable) | Error class + stack trace | | Primary metric | Issues with priority scoring | Stability score (% crash-free) | | Breadcrumbs | Yes | Yes | | Source maps | Full support | Full support | | Release tracking | Built-in | Core feature | | Commit integration | Suspect commits | Blame integration | | Custom grouping | Fingerprint rules | groupingHash callback | | Data retention | 90 days (Team), custom (Business) | 7-365 days by plan |

Performance Monitoring

This is where the feature gap becomes clear.

Sentry has invested heavily in becoming a full application performance monitoring (APM) tool. Distributed tracing, transaction monitoring, latency histboards, and Web Vitals tracking are all built in. You can trace a request from the frontend through your API to the database and back. The profiling feature shows CPU flame graphs for production code. Session replay records actual user sessions so you can see exactly what happened before an error.

Bugsnag offers basic performance monitoring focused on app startup time and network request latency, primarily for mobile apps. It's not trying to be an APM — it stays focused on error tracking and stability. If you need distributed tracing or deep performance insights, you'll need a separate tool alongside Bugsnag.

Mobile Support

Both tools have strong mobile SDKs, but Bugsnag has a slight edge for mobile-first teams.

Bugsnag was built with mobile in mind from day one. Its SDKs for iOS, Android, React Native, Flutter, and Unity are mature and well-documented. The stability score concept maps perfectly to mobile app health. Crash-free session and user rates are front and center. Integration with app store crash reports and ProGuard/dSYM processing is seamless.

Sentry also has comprehensive mobile SDKs and processes crash reports, dSYMs, and ProGuard mappings. The mobile experience has improved significantly, but some mobile-specific features (like ANR detection and out-of-memory tracking) arrived later than Bugsnag's equivalents.

I run self-hosted Sentry for my side projects and used Bugsnag at a previous job with a React Native app. For mobile crash debugging, Bugsnag's stability score was genuinely useful — our PM could check the dashboard without asking me "how's the app doing?" every standup. But Sentry's breadcrumbs and session replay were better for actually finding the root cause. One crash took me 3 hours to reproduce locally; Sentry's replay showed the exact user flow in 30 seconds. For backend services, Sentry wins hands down. For mobile-only teams, Bugsnag is a solid pick.

Alerting & Integrations

Sentry offers flexible alerting with metric alerts (threshold-based), issue alerts (when new issues appear or regress), and uptime monitors. Integrations include Slack, PagerDuty, Jira, Linear, GitHub, GitLab, and 50+ others. The Alert Rules builder is powerful but can feel complex.

Bugsnag provides alerting based on error rate spikes, new errors, and stability score drops. It integrates with Slack, Jira, PagerDuty, and other common tools. Alerting is simpler and more focused — which is either a pro (less to configure) or a con (less flexibility), depending on your needs.

Pricing

Sentry:

• Developer: Free (1 user, 5K errors/month, 10K transactions)
• Team: $26/month (limited errors, performance, session replay)
• Business: $80/month (more volume, advanced features)
• Enterprise: Custom pricing
• Self-hosted: Free forever (open-source)

Bugsnag:

• Free: 7,500 events/month, 1 project
• Essentials: From $59/month
• Growth: From $149/month
• Enterprise: Custom pricing

Sentry's free tier is more generous for error tracking, and the open-source self-hosted option is a huge differentiator. Bugsnag's paid plans can get expensive for high-volume applications.

Self-Hosting

Sentry is open-source and can be self-hosted. The official Docker Compose setup works well for small-to-medium deployments, though it requires PostgreSQL, Redis, Kafka, Clickhouse, and several workers. Self-hosting gives you full data sovereignty and unlimited events, but you're responsible for upgrades and infrastructure.

Bugsnag is SaaS-only — there's no self-hosted option. For organizations with strict data residency requirements, this may be a dealbreaker.

Sentry: Pros & Cons

Bugsnag: Pros & Cons

At my current gig, we pipe Sentry alerts into PagerDuty for anything that spikes above 50 errors/minute. The issue priority scoring helps — we ignore "low" priority noise and only page on "high." Before setting this up, we were drowning in alerts for known issues. One tip: set up Sentry's release tracking with your deploy pipeline. Being able to say "this error started with commit abc123" cuts debugging time by 70% easily. We tried Bugsnag's stability score approach too, but for backend microservices, "crash-free sessions" doesn't map as cleanly as it does for mobile apps.

When to Choose What

• Choose Sentry if you want a single platform for error tracking, performance monitoring, and session replay. If you need self-hosting for data sovereignty. If you're building across many languages and frameworks. If you want the most active open-source community.
• Choose Bugsnag if your primary focus is mobile app stability. If you want clean stability scores to share with product managers and executives. If you prefer a focused tool that does error tracking exceptionally well without feature sprawl. If you're in a mobile-first organization.
• For broader observability beyond error tracking, see our Datadog vs New Relic comparison. And to catch bugs before they hit production, check out Snyk vs SonarQube for static analysis and dependency scanning.

Bottom Line

Sentry is the better all-around choice for most engineering teams in 2026. Its breadth of features — error tracking, APM, session replay, profiling, cron monitoring — means one less tool in your stack. The open-source option and generous free tier make it accessible to teams of any size. Bugsnag remains excellent for mobile-focused teams that value stability metrics above all else. If your CTO asks "what's our crash-free rate?" every Monday, Bugsnag makes that answer trivially easy to find. Both tools are significantly better than logging errors to CloudWatch and hoping for the best — pick one and ship with confidence. Make sure errors route to the right on-call engineer — see our OpsGenie vs PagerDuty comparison for incident management.