New Sketchup for Schools User

We have begun using Sketchup for Schools and would like the option to view our creations in Augmented Reality using our Ipads.
We installed our Sketchup Viewer and see that the AR option is only available for the two samples. From what I am reading, some articles indicate that it is only available as an additional purchase.
My question is - are there any alternatives for viewing sketchup in AR? Can I export and convert to obj? Our school does not have any money available for this project so I need a free procedure for exporting from Sketchup and importing to a free viewer.
We have used Cospaces in the past to view AR.