I was able to put a krpano tour inside an anrdoid app via phone gap. I followed this tutorial by Tony Redhead
https://tonyredhead.com/phonegap-build/offline-tours-android
It's working pretty well, except for cardboard mode. Please see video
https://www.youtube.com/watch?v=3HJiWrbp-ZE
When I switch to cardboard mode, its too zoomed in. If I open the same tour in android chrome browser and switch to cardboard mode it works fine.
Any ideas why this is happening and How do I fix this?