It uses Apple's ARKit so it will only work on iPhones. And you need iOS 11 and at least an iPhone 6S or a very recent iPad for it to work.
Google has announced some Android AR stuff so when they roll they out, we will look at making this stuff work across both platforms. Sorry it won't work for you yet!
I always wait for the first minor version bump before installing a new iOS release. Not this time! I can't wait that long to play with what you've built.
(I'd like to read more about it, too, but your Medium link upthread is 404ing...)
Google has announced some Android AR stuff so when they roll they out, we will look at making this stuff work across both platforms. Sorry it won't work for you yet!