On Apple Silicon (arm64)

If you need the GUI (recommended), then you must first install a working distribution of tcl-tk on your mac, as the version coming with Macos is broken on these targets. Because we tested it, we recommend to install homebrew (see https://brew.sh/ for instructions), and then to install the homebrew tcl-tk@8 package (the default tcl-tk package -- version 9 -- is not supported yet) by:

IMPORTANT:

Then proceed as explained below for Intel macs.

On Intel macs (amd64)

Step 1. On versions of MacOS with GateKeeper enabled (10.8,9,...), GateKeeper will prevent installing tina and pretend that the application is damaged.
It is not; it is simply that tina is not signed by a registered Apple developper.

On such systems, tina can be installed as follows:

Step 2. On versions of MacOS with XProtect enabled (notably Monterey and later versions), and depending which tool was used to download tina, XProtect may flag nd.app as unsafe and prevent to launch it.

For more information, check e.g.