v1.7
Now this app is automatically built with github actions. So it may require some processing before running.
Run the following command to make the app runnable.
sudo xattr -rd com.apple.quarantine ./NetSpeedMonitor.app
Note: this release v1.7 is an arm64-only app. Go to https://github.com/elegracer/NetSpeedMonitor/releases/tag/v1.7.1 if your macOS is x86_64.