Hello MainMoose,
I encountered a similar issue recently. I believe this is because Century Gothic, while included on most Windows machines and Macs, is not part of the default installation on Apple’s iPhone/iPad operating system.
After looking into this, I think that Futura is the closest font for iPad/iPhone in terms of style. If you stack it after century gothic (i.e. font-family: century gothic, futura, sans serif;
etc. in your .css file you should get something that looks closer to the original.
Good luck!
I