Is there any chance that the iOS SDK can be distributed as a zip archive? The InstallAnywhere installer doesn't launch on macOS High Sierra (10.13) and in general, I distrust installers that tend to spew stuff all over my system.
 
I've managed to use an installer extractor under Windows (VMWare Fusion) to get what I needed (couldn't run the installer on Windows because it needed Java which I don't have installed).
 
Thanks.