HONEST ALTERNATIVE · SEO + AI VISIBILITY
Raygun is an application performance monitoring platform providing crash reporting, error tracking, and Real User Monitoring (RUM) for web and mobile applications — with Core Web Vitals measurement via its JavaScript agent. Starting at $8/month. DeepSEOAnalysis is a technical SEO and Core Web Vitals audit tool that reports CrUX p75 CWV — the exact Google ranking signal from all Chrome sessions, not agent-sampled data — alongside structured data validation and full technical SEO auditing.
At a glance
The useful answer is not “which tool is best?” It is which tool fits the job you need done this week.
| Criterion | Competitor | DeepSEOAnalysis |
|---|---|---|
| Core Web Vitals measurement | LCP, CLS, INP/FID, FCP, TTFB via JavaScript RUM agent (instrumented sessions) | CrUX p75 LCP, INP, CLS across all Chrome sessions — Google's actual ranking signal |
| CWV data source | Agent-based: only sessions where Raygun script loads and executes | CrUX: aggregated from all Chrome browsers, no instrumentation required |
| Error and crash tracking | JavaScript error tracking and mobile crash reporting with intelligent grouping | Not applicable — DeepSEOAnalysis is a technical SEO audit tool |
| Structured data validation | Not provided | FAQPage, Product, Article, BreadcrumbList, HowTo, Review schema validation |
| Technical SEO audit | Not provided | Canonical, noindex, hreflang, redirect chains, sitemap, title, meta description |
| CWV root cause | Session-level performance traces — identify which resources caused LCP delay per session | Page-level CWV diagnosis with LCP element identification and fix guidance |
| SDK instrumentation overhead | Raygun RUM script adds JavaScript execution overhead affecting INP and LCP | No SDK — zero instrumentation overhead on audited pages |
| AI visibility / structured data | Not provided | GEO score: FAQPage/HowTo schema, AI crawler access, question-heading ratio, llms.txt |
| Pricing | Starts at $8/month. Crash Reporting: from $8/month. APM: from $50/month. | $0 ungated / Pro $24/mo / Agency $89/mo |
What each product is
Raygun provides crash reporting (JavaScript, mobile), error tracking with intelligent grouping, and Real User Monitoring including Core Web Vitals via its browser agent. Its RUM product tracks LCP, CLS, FID/INP, FCP, and TTFB from instrumented sessions. Primary audience: software engineering and web performance teams wanting combined error and performance monitoring.
DeepSEOAnalysis reports CrUX p75 CWV — the same data source Google uses for ranking decisions — alongside technical SEO auditing, structured data validation, and canonical hygiene. The key distinction from Raygun's RUM: CrUX aggregates across all Chrome browser sessions without any instrumentation, while Raygun's agent captures only sessions where the Raygun script is loaded. These two datasets often diverge, particularly for ad-blocked traffic.
When to choose which
Pricing context
FAQ
Yes — Raygun's Real User Monitoring (RUM) product captures Core Web Vitals including LCP, CLS, and INP (formerly FID) via its JavaScript browser agent. Raygun also measures FCP and TTFB. These metrics are collected from sessions where the Raygun RUM script is loaded and executes successfully — which means Raygun captures a subset of your actual user sessions. Users with ad blockers, users in browsers where the script fails to load, and sessions before the script initialises are excluded from Raygun's data. Google's CrUX (Chrome User Experience Report), which determines your pages' ranking in Search, aggregates CWV data from all Chrome browser traffic with no instrumentation — so Raygun's CWV data and CrUX data often differ, sometimes significantly. DeepSEOAnalysis reports CrUX p75 directly.
The Raygun RUM and crash reporting JavaScript adds processing overhead to pages where it is loaded. If loaded synchronously in the document head, it adds render-blocking time that increases LCP. The script installs global error handlers and performance observers that add JavaScript execution on every page load, contributing to Total Blocking Time (TBT) and potentially affecting INP on interaction-heavy pages. Raygun recommends async loading (via the `async` attribute on the script tag or loading via a tag manager) to minimise performance impact. In a measurement paradox, Raygun's own presence on the page can worsen the CWV scores it is measuring. DeepSEOAnalysis can flag the Raygun script as a contributing factor to CWV failures when it appears in the resource load timeline.
Raygun RUM (Real User Monitoring) collects performance data from sessions where Raygun's JavaScript agent is loaded. CrUX (Chrome User Experience Report) collects Core Web Vitals from opted-in Chrome users across all websites, with no instrumentation required on the measured site. The practical differences: CrUX data is what Google uses in its ranking algorithm and in Google Search Console's Core Web Vitals report; Raygun RUM data is what Raygun shows in its dashboard. They often diverge because Raygun excludes ad-blocked users and sessions where the script fails to initialise, while CrUX includes them. When Raygun shows "Good" LCP but your GSC Core Web Vitals report shows "Needs Improvement," CrUX is the authoritative signal for ranking.
They serve different audiences and use cases. Raygun is for software engineering and web performance teams who need session-level detail — which specific user sessions experienced poor LCP, which JavaScript errors caused crashes, what the error rate was after a specific deployment. DeepSEOAnalysis is for SEO and marketing teams who need to know whether pages meet Google's CWV ranking thresholds (based on CrUX, not session-sampled data) and whether structured data is valid. If Raygun's session traces show a specific resource causing LCP delay, DeepSEOAnalysis confirms whether that delay is reflected in the CrUX p75 that determines ranking — the combination gives both engineering detail and SEO-relevant truth.
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