Does anyone know is there something similar to this in Android OS? How Google's plans are to explore the AR space?
I haven't heard anything about them for a few years now.
Visual-inertial SLAM has been working for a few years on mobile phones: https://www.youtube.com/watch?v=e7bjsIqlbS0 So there should be plenty of third-party libraries you can use.
They solve the chicken and egg problem, having phones with the needed hardware before the apps/demand even exists.