AuditJet vs Sentry Performance
AuditJet specialises in CWV monitoring for marketing and web teams — Sentry is an engineering-first error and performance tool.
What is Sentry Performance?
Sentry is the de facto standard for frontend error tracking. Most engineering teams with a JavaScript application have Sentry installed — it catches unhandled exceptions, surfaces source-mapped stack traces, and groups errors by frequency and user impact. In 2019 Sentry expanded into performance monitoring, adding transaction tracing, Web Vitals tracking, and frontend performance profiling alongside its core error-tracking product.
The Performance module captures Core Web Vitals from real users who have the Sentry SDK installed on the page. Unlike Vercel Speed Insights (which works at the infrastructure level), Sentry measures performance by instrumenting JavaScript directly — so it can correlate a slow LCP with the specific API call or resource that caused it. For an engineer debugging why checkout is slow for users in Germany, Sentry's transaction traces are a powerful diagnostic tool.
Where Sentry falls short as a Core Web Vitals monitoring platform is in proactive detection. Sentry measures what happened; it doesn't proactively test whether your pages are meeting thresholds. There's no scheduled synthetic Lighthouse scan, no threshold-based alerting for CWV metrics, and no revenue impact model that translates a 300ms LCP regression into lost conversion revenue. It's a reactive debugging tool — AuditJet is a proactive monitoring and alerting tool. Most performance-conscious teams benefit from both.
Pricing note: Sentry free tier: 5,000 errors/month and 10,000 performance transactions/month. Team plan: $26/month for 50k errors, 100k transactions. Business: $80/month. Performance monitoring is included in all plans but consumes transaction quota.
Side-by-Side Comparison
| Feature | AuditJet | Sentry Performance |
|---|---|---|
| Continuous synthetic CWV monitoring | ||
| Real User Monitoring (RUM) | ||
| Threshold-based CWV alerting | ||
| Revenue impact per regression | ||
| Error tracking | ||
| Transaction traces (APM) | ||
| AI fix suggestions for CWV | ||
| Historical CWV trend charts | Limited | |
| Non-technical team dashboard | ||
| Monitoring frequency | Every 15 min (synthetic) | Real users only |
Limitations of Sentry Performance
Sentry Performance captures Web Vitals from real user sessions via the JavaScript SDK. If a page has low traffic, or if a regression was introduced after business hours, there may be no Sentry data at all. Synthetic monitoring runs on a schedule regardless of traffic, catching regressions on low-traffic pages and staging environments where real users never visit.
Sentry can alert on performance issues, but threshold-based alerts for Core Web Vitals require manual setup in Sentry's metric alert system — specifying the right transaction, the right metric, and the right aggregation. Most teams don't configure this, because Sentry's primary alerting UX is built around error rates, not CWV thresholds.
Sentry's revenue and roadmap are driven by error tracking. Performance monitoring features are slower to ship and less polished than the core product. Features like revenue impact modelling, AI fix suggestions, and Lighthouse score history haven't appeared in Sentry's roadmap despite years of user requests.
Sentry charges by transaction volume. Instrumenting every page load with full performance tracing on a high-traffic site consumes transaction quota rapidly. Teams often turn down sampling rates to control costs — which means the p75 CWV scores are based on a fraction of actual user sessions, reducing statistical reliability.
Why teams choose AuditJet over Sentry Performance
Sentry's release tracking links performance data to specific deployments. If p75 LCP on your checkout page jumped 400ms after the 2.4.1 release, Sentry can show you exactly which release caused it and link to the diff. This attribution is extremely valuable for engineering teams doing root-cause analysis.
When a user experiences a slow page, Sentry captures the full transaction trace: which API calls were made, how long each took, which resources blocked rendering. For diagnosing why INP is high on a specific page, this trace data goes deeper than anything a Lighthouse scan can show.
If your engineering team already has Sentry for error tracking, the Performance module activates with minimal additional configuration. The data is immediately available without new infrastructure, new contracts, or new logins.
When to choose each
Use Sentry Performance if your primary need is to correlate performance regressions with specific code changes, trace slow transactions to their source, or get performance data alongside error tracking in a single tool. It's best for engineering teams debugging production issues.
Choose AuditJet if you need proactive CWV monitoring with threshold alerts, revenue impact quantification, or a dashboard that marketing and product teams can use without needing to understand Sentry's data model. AuditJet also catches regressions before real users encounter them — Sentry can only tell you after the fact.
AuditJet vs Sentry Performance — FAQ
Does Sentry monitor Core Web Vitals?
Yes — Sentry's Performance module captures LCP, CLS, FID, and INP from real user sessions via the JavaScript SDK. However, it measures what real users experienced rather than proactively testing whether your pages meet CWV thresholds. It has no scheduled synthetic monitoring and no native threshold-based alerting for CWV metrics.
Can Sentry replace a dedicated CWV monitoring tool?
Partially. Sentry provides real-user CWV data and release-correlated performance trends, which are genuinely useful. But it lacks scheduled synthetic monitoring (so you can't detect regressions on low-traffic pages), native CWV threshold alerting, and revenue impact modelling. For teams that need proactive alerting, a dedicated CWV tool like AuditJet complements Sentry rather than overlapping it.
Does AuditJet integrate with Sentry?
AuditJet can send performance regression alerts to the same Slack channels your Sentry error alerts go to, so your team sees both error spikes and CWV regressions in one place. Native Sentry integration is on AuditJet's roadmap.
Which is better for non-engineers: Sentry Performance or AuditJet?
AuditJet is designed so that marketing managers, product owners, and SEO teams can monitor and understand Core Web Vitals without engineering involvement. Sentry's interface is built for software engineers — navigating transactions, traces, and error groups requires familiarity with how web applications work. For non-technical stakeholders, AuditJet's dashboard is significantly more accessible.
Ready to try AuditJet?
Set up monitoring in under 2 minutes. No credit card required.
Start Monitoring Free