The 1.1 version of yFi for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Internet & Network Tools, more precisely Network tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free Mac app was originally produced by coderose.io.
From the developer:
yFi helps you to stay connected and ensures you don't drop out. Bad WiFi quality or connection issues make online meetings and calls a potential nightmare. yFi ensures that if you encounter any issues, it automatically reconnects so you continuously have the best connection.
You may want to check out more Mac applications, such as AirportTraffic, QuickWho or NetSpot Device Installer, which might be similar to yFi.