Best way to output VR Unity build files for display in HTC Vive with controllers?

Hi,

I’m running Unity on a pc.
I have previously displayed a VR HTC Vive piece with a person using the controllers to transport around the terrain. The pc was physically present and I just opened up a unity build file from the desktop in steam/steam VR and it all played fine with the Vive HMD.

The problem is I have to now to send the same piece overseas to someone who won’t have the same set up.
I’ve seen mention of outputting .apk files? I think this displays in an android app? but then all the controllers functionality is lost…or maybe just a exe file on a pc desktop?
Has anyone done this before? or is it possible for a controller/transporter piece? maybe only floating camera pieces with no controller use is feasible?

thanks