macos – Developer of a tool says I need to run an exe file and chmod it on mac

I am trying to use a tool written to help convert output of one program to a file useable by another.

The tool when downloaded is a lot of files and a .exe file.

I assumed this is not the Mac version, but the developer says that it runs on Mac OS and I need to CHMOD +x it and it will run.

I can’t even get to the stage of trying that as my mac defaults to use the Unarchiver for .exe files. I have tried both SwiftDefaultApps and RCdefault apps to try and de-allocate the unarchiver to those files, but neither works.

I’ve changed the suffix manually to .app and tried to run that but am told “You can’t open the application because it is not supported on this type of Mac.”

I have dug into the terminal and think I have chmod -x the file.

Is there something I should be doing, or is it just that an exe just never going to work on a mac?

I’m a bit confused.

Thanks for any pointers.