Real-user monitoring (RUM) is fundamentally different from synthetic testing. Instead of simulating a page load in a controlled environment, RUM collects performance data from every real visitor to your site and aggregates it into reports you can act on. RequestMetrics is one of the more approachable RUM tools available, designed to be set up quickly and understood without a data engineering background. You add a small JavaScript snippet to your site and within hours you’re seeing real performance data from your actual users.
The dashboard shows you Core Web Vitals, Time to First Byte, and other key metrics broken down by page, geography, device type, and connection speed. This level of segmentation is where RUM earns its keep. Your site might score well in a synthetic test from London, but if 30% of your traffic comes from users on mobile connections in rural areas, RequestMetrics will show you that those users are experiencing a very different, much slower version of your site. You can then make targeted optimisations for the segments that matter most rather than optimising for an average that may not represent anyone in particular.
RequestMetrics starts at $10 per month, which is genuinely reasonable for a RUM service. The setup is simpler than enterprise RUM tools like New Relic or Datadog, making it a good fit for small to medium-sized sites that want real-user data without the complexity or cost of a full observability platform. I think for most WordPress sites and small web applications, RequestMetrics hits the right balance of capability and simplicity. If you’ve been relying solely on synthetic testing, adding a RUM tool like this will almost certainly surface issues you didn’t know you had.