it is doable, just stick to cordova, phonegap and the like.
and if you have it, it works for all of your tours.
follow their documentation and howtos
Thanks a lot. I looked into this and came as far as to create a working project with phonegap, but did not really manage to understand how to publish. Before I started digging further, I read about the Virtual Tour Pro app, mentioned below. That works for me.
Nevertheless it sounds charming to have an app, not just for me, offering this to a client, but even for a client to promote his 360 stuff afterwards. Maybe I consider using this approach for dedicated projects - if I can find out how to publish, that is...
Thanks again,
Michael