I uploaded 2 EXE examples
House VR Experience, this is an EXE that the user should be able to open directly, and use measurements, and notes with, this example can do downloaded from here
Real Estate 360, this is another example showing how the designer can share 360 Grid as a stand alone EXE, this file is available here
Another method of simple communication is shown in the website, where the VR experience automatically plays for the user directly from the website, as you can see in the following website