Developer cannot be verified on MacOS - GoldenCheetah/GoldenCheetah GitHub Wiki

MacOS will block applications that have not been signed by a verified developer. To do this we have to pay Apple money. We do not like paying Apple money to allow users to run our program, so we don't give them a bean.

Instead, when you run GoldenCheetah for the first time you need to authorize it explicitly after macOS warning you the developer is unverified. The procedure is specific to your macOS version, a link to Apple documentation is provided below. You will only need to do this the first time you run, the setting is remembered until you install a newer version.

For information specific to your macOS version, see Authorize GoldenCheetah to run.