Xcode now allows assets like icons and sprites to be imported as vectors in PDF format. However, such assets are normally provided in SVG format.
I downloaded Gapplin to convert some very simple SVGs to PDF for Xcode. However, the resulting PDFs did not open properly. I found a web-based converter and that worked fine.
The files are PD, so I have attached an example and the working output from the online converter. If we can get this to work in Gapplin I think it would make it a must-have tool for Xcode developers.