Stop guessing!
See exactly what your
users experience.
Go beyond Lighthouse scores. Monitor real-world interactions across every ISP, region, and device. Get deep visibility into broken APIs and slow page loads with one simple script.
Performance monitoring that you
does'nt cost
performance.
A ~5kb heartbeat for your web app. Capture Web Vitals, API latencies, and user environment data with zero overhead—enriched at the edge and built for the modern developer.
Lightweight Script (~5kb)
Our tracking script is optimized for performance. It wont affect your Lighthouse scores or LCP.
Core Web Vitals
Capture LCP, CLS, and INP from actual user sessions to see your site's true performance floor.
Request Interception
Automatically intercept fetch and XHR calls, capturing API latency, status codes, and payload sizes without manual instrumenting.
Geo & ISP Enrichment
Analyze performance by country, city, and ISP. Understand how global network conditions impact your app.
Integrated in
60 seconds.
No SDK
required.
Stop wrestling with complex configurations. rum-core is a drop-in solution that works with any framework.
The Script
Add our ~5kb vanilla JS snippet to your <head>.
The Key
Provide your unique project API key to initialize.
The Insight
Track your custom user events in real time.
Simple, transparent pricing.
Scale your monitoring as you grow.