Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

Head-to-head · Core Web Vitals Monitoring Tools

Grafana Faro vs Calibre RUM

  • Updated Nov 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Grafana Faro #5 in Core Web Vitals Monitoring Tools 8.7/10 Free plan Free plan✓ 0 of 3 features Visit Grafana Faro
Calibre RUM #8 in Core Web Vitals Monitoring Tools 8.4/10 15-day trial Free trial✓ 0 of 3 features Visit Calibre RUM

Grafana Faro leads on 2 checks, Calibre RUM on 0, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGrafana Faro · 8.7/10
  • Lowest starting priceGrafana Faro · $19/mo
  • Free planonly Grafana Faro
  • Free trialonly Calibre RUM

Grafana Faro scores higher on our rubric for core web vitals monitoring tools: 8.7 against 8.4 out of 10; our editors rank them #5 and #8.

Grafana Faro offers free plan; Calibre RUM doesn't. Grafana Faro is cheaper to start at $19/mo against $75/mo.

Grafana Faro is the better fit for grafana users wanting open RUM observability. Calibre RUM is the better fit for organizations wanting detailed, configurable RUM.

  • Grafana Faro fits best

    Grafana users wanting open RUM observability

  • Calibre RUM fits best

    Organizations wanting detailed, configurable RUM

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Grafana Faro 8.7/10 Visit ↗ Calibre RUM 8.4/10 Visit ↗
At a glance
Editor score 8.7 8.4
Ranking #5 in Core Web Vitals Monitoring Tools #8 in Core Web Vitals Monitoring Tools
Best for Grafana users wanting open RUM observability Organizations wanting detailed, configurable RUM
Pricing model Free plan + paid Paid
Starting price $19/mo (best) $75/mo
Free plan ✓ (best) —
Free trial — 15 days
Deployment Cloud, Self-hosted Cloud, Browser extension
Platforms Web Web
Support Email, Community, Docs Email, Docs
Integrations 6 integrations 8 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Grafana Faro 0/3 · Calibre RUM 0/3
Real-user monitoring Not checked yet Not checked yet
Synthetic monitoring Not checked yet Not checked yet
CI budget checks Not checked yet Not checked yet
Specs
Alert channels Not checked yet Not checked yet
Data retention Not checked yet Not checked yet
Synthetic test locations Not checked yet Not checked yet
Our review
Pros
  • Open-source browser RUM with Web Vitals and frontend performance metrics
  • Correlates sessions, errors, traces, geography, and backend observability
  • Runs in Grafana Cloud or self-hosted deployments with OpenTelemetry-JS
  • Element attribution identifies LCP, CLS, and INP contributors
  • Flexible segmentation, sampling, and data-retention controls
  • APIs, CLI, webhooks, and workflow integrations support team processes
Cons
  • Focused on browser applications rather than native mobile apps
  • Pro usage above 50k monthly sessions is billed per additional sessions
  • Enterprise deployment and pricing require a custom arrangement
  • Paid plans start at $75 per month
  • Requires installing a JavaScript snippet on monitored websites
  • Website-focused rather than mobile app monitoring
Our verdict

Grafana Faro is an open-source JavaScript web SDK for real user monitoring in browser-based applications. It collects Web Vitals, frontend performance metrics, logs, exceptions, unhandled errors, rejected promises, events, user sessions,…

Read the review →

Calibre RUM is a hosted real user monitoring service for websites. It collects Core Web Vitals and related experience signals from real browser sessions, then organizes them into dashboards for sessions, pages, metrics, audiences,…

Read the review →
  1. Grafana FaroCore Web Vitals Monitoring Tools 8.7Free plan
  2. Calibre RUMCore Web Vitals Monitoring Tools 8.415-day trial

Strengths and trade-offs

  • Grafana Faro — where it wins

    • Open-source browser RUM with Web Vitals and frontend performance metrics
    • Correlates sessions, errors, traces, geography, and backend observability
    • Runs in Grafana Cloud or self-hosted deployments with OpenTelemetry-JS

    Where it doesn't

    • Focused on browser applications rather than native mobile apps
    • Pro usage above 50k monthly sessions is billed per additional sessions
    • Enterprise deployment and pricing require a custom arrangement

  • Calibre RUM — where it wins

    • Element attribution identifies LCP, CLS, and INP contributors
    • Flexible segmentation, sampling, and data-retention controls
    • APIs, CLI, webhooks, and workflow integrations support team processes

    Where it doesn't

    • Paid plans start at $75 per month
    • Requires installing a JavaScript snippet on monitored websites
    • Website-focused rather than mobile app monitoring

More comparisons

All core web vitals monitoring tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update