Test your internet speed in seconds, without leaving the menu bar.

That's normal for any speed test: your connection shares bandwidth with the rest of your home or office, Cloudflare's server load varies with the time of day, and Wifi adds its own fluctuations (distance, interference). If a result looks off, run the test again a few minutes later and look at the trend across your last 5 tests rather than a single run.

Ethernet is almost always more stable and closer to your actual subscribed speed, since it has no interference or radio contention with other devices. SeventySpeed keeps your last 5 tests in its history: run one over Wifi, then another after plugging in a cable, to compare both directly on your own line.

The test is capped by time, not volume: 8 seconds for download, 5 seconds for upload, no matter how fast your connection is. On a slow line that's a few tens of megabytes; on a very fast fiber line it can reach a few hundred megabytes to fill the same time budget. Avoid running it repeatedly on a capped mobile plan.

No, zero extra bytes. This option simply reads the network counters macOS already tracks (the same ones Activity Monitor uses), every 2 seconds. No request is ever sent over the network: it's local reading only, so it costs nothing on your data plan or your line.

It's the same app. On this website: a free 7-day trial, then a 6.90 CHF one-time license with automatic updates. On the App Store: direct purchase, updates through Apple. Pick whichever suits you.