Measure your Wi‑Fi / fixed‑line connection right in the browser. Share the result and you add an anonymous sample to SigBench's coverage map — no app, no sign‑up.
SigBench currently measures download, upload and latency to its server in Singapore. Other speed test providers often pick a test server close to you — typically a local ISP exchange or nearby metro — so their download, upload and ping will usually read higher. Because SigBench is measuring the path to Singapore rather than a nearby node, the numbers can differ a lot. That is expected, not a fault in your line.
Looking for the Android app? Get it on the homepage (Google Play or sideload). iPhone users can use this speed test in the browser — there is no iOS app.