MARS is installed. MARS Connect is in the menu bar and opens at every login.

1. Choose MARS as the output of your DAW or Mac.
2. Connect the phone and open MARS: the first time, pick it in the MARS Connect menu and press Start; after that it starts on its own.
3. On first start macOS asks for Microphone access: it is needed to read the MARS output.

To uninstall: /Applications/MARS Connect.app/Contents/Resources/uninstall.sh