Questions, answered

Yes, with no paid tier, no account and no ads. The code is open source under AGPL-3.0.

Firefox, Microsoft Edge and Opera today, and Chrome soon. It also runs in other browsers built on Chromium. Get it for your browser.

Only the test traffic: bytes downloaded from and uploaded to the test server, and the pings. Results are stored in your browser and nowhere else. The privacy page has the details.

Each test uses its own servers, number of streams and length. MeterX tests against the nearest Cloudflare location with several streams for a fixed time and trims the slow start. How it measures.

When a line is busy, routers can queue too much data, so every request waits in line. Speed looks fine but calls and games lag. MeterX measures ping while the line is full and grades the rise from A to F.

Yes. The repository includes a small server you can run on your own machine or network, and the settings page lets you point MeterX at it.

Press Share in the popup. The link carries the result inside it, after the # sign, so it never reaches a server, and this site shows it to whoever opens it.

In the issue tracker on GitHub.