If you're shopping for an error tracker and the choice has narrowed to Sentry and Bugsnag, you're comparing two of the most established players in the space. Both capture exceptions, group them intelligently, and alert your team when something breaks. But they evolved differently — Sentry as a full-stack performance and observability platform, Bugsnag as a mobile-first stability tool — and those roots show in how each one works. This comparison will help you understand where they align, where they diverge, and which one fits your team's workflow.
Both are event-based, hosted services aimed at developers and release teams. Both integrate with your favorite tools. But the experience, pricing structure, and feature emphasis are meaningfully different. If you're just starting to evaluate error tracking, the fundamentals are the same across all platforms: capture, group, and alert. The differences emerge in how deep they go, what they optimize for, and what they cost. Let's break it down.
The core mission: Where they start differently
Sentry positions itself as a comprehensive error and performance monitoring platform. It captures not just exceptions, but also slow transactions, session replays, cron job failures, and uptime metrics. The philosophy is: one dashboard for all the ways your app can fail. This breadth appeals to teams that want to correlate errors with performance data — if a transaction is slow and failing, seeing both in one place helps you debug faster.
Bugsnag leans harder into stability diagnostics for web and mobile. It emphasizes release health, stability scoring (the percentage of sessions free from crashes), and a tight focus on getting teams to zero crashes as fast as possible. The philosophy is: get visibility into what's broken and its real-world impact, quickly. For release teams shipping multiple times a day, knowing that stability dropped 2% after your last deploy is actionable information you need immediately.
This difference shapes what you'll see when you log in. Sentry shows you errors, traces, replays, and metrics all mixed together. Bugsnag shows you a stability center with trend analysis, release annotations, and an interactive timeline of what happened.
Error grouping and fingerprinting
Both platforms group duplicate errors into a single issue so you're not drowning in noise. Here's where they diverge:
Sentry's fingerprinting is configurable but starts with the stack trace — same exception type, same file, same line gets grouped together. You can customize the fingerprint with tags and context to handle exceptions that look different but are really the same bug. This is powerful for teams that want fine-grained control; it's also something you need to tune.
Bugsnag's grouping also starts from the stack trace but adds smarter heuristics around release context. Two exceptions are grouped the same if they have the same root cause in the same release. This means a regression in version 2.1 won't get mixed with the same error from version 2.0. For teams doing frequent deploys, this release-aware grouping saves a lot of manual triage.
For a deeper dive into how grouping works, see our guide to error grouping and fingerprinting. Getting grouping right is one of the error tracking best practices that separates tools that save time from tools that add noise.
Pricing: Where the bill diverges
Both charge based on event volume (errors captured per month). But the tiers and starting point differ:
| Plan | Sentry | Bugsnag |
|---|---|---|
| Free | 5,000 errors/mo | 7,500 events/mo |
| Starter paid | $26/mo (50k events) | ~$22/mo |
| Mid-tier | $80+/mo (Business) | ~$99/mo (25k–50k events) |
| Model | Separate pricing for spans, replays, logs | Events only; integrations included |
Sentry's pricing gets complicated at scale because errors, trace spans, session replays, and logs are charged separately. A team tracking errors and performance traces and replays can see bills spike faster than expected. Bugsnag keeps it simpler: you pay for events, and everything else (release tracking, integrations) is included in the plan.
For teams that only care about error tracking and not performance spans or replays, Bugsnag's simpler model often wins. For teams needing full-stack observability (errors + traces + replays), Sentry's extra features justify the complexity.
Both platforms offer annual discounts (typically 15–30% off monthly billing). If you're committing to one for a year, ask about annual pricing before deciding.
Mobile crash reporting and stability tracking
Bugsnag was built from the start with mobile developers in mind. Its stability center shows you:
- Stability score: percentage of sessions crash-free per release, in real time.
- Crash-free users: how many of your active users haven't hit a crash in the last 24 hours.
- Release health: automatic tracking of stability trends when you ship.
These metrics are crucial for mobile teams that ship multiple times a week and need to know instantly if a new version tanked stability. Bugsnag makes this the center of the experience. For teams building iOS or Android apps, crash reporting that automatically ties each crash to a release and shows its user impact is table stakes.
Sentry offers crash-free rate and release health too, but they're one feature among many. For a mobile-first team, Bugsnag's focus on stability as the north star often feels more natural. Both platforms capture the stack traces you need to debug, but Bugsnag's mobile dashboard is optimized for the data mobile teams care about most.
Tracing, performance, and the big picture
Sentry ships distributed tracing by default. You can see span waterfalls showing where a request spent time across services. You can track transaction throughput and latency percentiles (p50, p75, p95, p99). Session replay lets you watch what the user was doing when an error hit.
Bugsnag doesn't have native tracing or session replay. It focuses on errors, crashes, and their relationship to releases. If you need to correlate an error back to a slow database query or a call across services, Sentry gives you that correlation. If you just need to know which errors are degrading stability, Bugsnag gets you there faster.
This is the biggest functional gap. If you're running microservices and need distributed tracing to debug latency, Sentry is the better fit. If you're a monolith or a team where errors are the primary problem, Bugsnag is lighter and cheaper.
Integrations and workflow fit
Sentry integrations: Jira, Slack, GitHub, GitLab, Bitbucket, PagerDuty, AWS, Datadog, and dozens more. Sentry SDKs exist for every major language and framework.
Bugsnag integrations: Also Jira, Slack, GitHub, PagerDuty, and a broad list, plus some mobile-specific platforms. SDK coverage is strong across web and mobile; backend SDK selection is narrower than Sentry's.
Both integrate well with typical dev tools. Sentry's breadth wins if you're using niche or bleeding-edge tech stacks. Bugsnag's integrations are tighter around mobile workflows (e.g., App Store release notes linking).
Alert rules and on-call
Sentry lets you set alert rules by new issues, spike in event frequency, or custom thresholds. Alerts can route to email, Slack, PagerDuty, or webhooks.
Bugsnag alerts fire on new crashes, stability regressions, or custom event-count rules. Routing is similar (email, Slack, integrations).
Both support on-call workflows, but Sentry's integration with PagerDuty is more mature. If you use PagerDuty for incident management, Sentry's escalation and context-passing is stronger.
Which should you choose?
The choice ultimately comes down to your infrastructure and priorities. Here's a framework to help:
Pick Sentry if:
- You need distributed tracing and performance monitoring alongside error tracking.
- You run microservices and want to correlate errors to slow queries or cross-service latency — Sentry's span waterfalls show you the critical path and where time is being spent.
- Session replay would help your team (e.g., seeing the browser state when an error happened).
- You have complex grouping rules and want full control over fingerprinting.
- You're comfortable with multi-dimensional pricing (separate charges for errors, spans, replays, logs) and want maximum flexibility in what you track.
- You need API latency diagnostics and the ability to correlate errors with slow backend calls.
Pick Bugsnag if:
- Mobile stability is your primary concern (you ship multiple app versions per week).
- You want a simpler pricing model without separate charges for spans and replays — you pay for events, period.
- Release health and stability scoring matter more than performance tracing.
- You prefer a lighter, more focused tool over a platform with every observability feature.
- You're building a web app or backend service where errors are the main signal and you don't need full-stack tracing.
- You want a dashboard that's intuitive for non-SRE teams (product, QA, release managers) to use.
Migration and lock-in
Both use the Sentry SDK protocol, which means your instrumentation is portable. Switching SDKs is a matter of changing a DSN (the endpoint your SDK points to). Neither platform creates strong vendor lock-in at the SDK level. If you need to evaluate whether there are other affordable error tracking options beyond these two, the Sentry SDK compatibility means you have choice.
The sunk cost is usually in alert rules, integrations, and the knowledge your team has built around the dashboard. That's true for any tool you commit to, and it's a good reason to think hard about fit before signing up. Consider using our guide to choosing an error tracking tool to systematize your evaluation — features, pricing, SDK coverage, and integration fit matter, and they're worth scoring side by side.
If you're deciding between multiple options, take advantage of free tiers. Spin up both in your staging environment for a week and see which dashboard you'd rather look at every day. The tool you'll actually use matters more than the one with the longest feature list.
The bigger picture
Sentry and Bugsnag are both mature, well-funded, and trusted by thousands of teams. You won't make a "wrong" choice between them — you'll make a choice that's better or worse for your specific workflow. If you're building a mobile app, Bugsnag's stability-first design shines. If you're running a distributed backend, Sentry's tracing and performance tools are hard to beat.
The real decision is whether error tracking alone is enough for your team, or whether you need error tracking plus performance monitoring plus replays. That answer drives everything else.
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Both Sentry and Bugsnag are excellent tools. Understanding their strengths — Sentry's observability scope, Bugsnag's stability focus — will help you pick the one that saves your team the most time chasing down production bugs.