For people who do not need to do much more than display PDFs cross platform, DynaPDF is absurdly expensive.
I have the DynaPDF “Lite” license which is useful, but already cost me $300, and doesn’t allow me to render PDFs. To render, one has to pay twice more and then some to get the “Pro” license. I find that really incredible.
The authors should offer a reasonably-priced cross-platform rendering license, which has one function working on both Mac and Windows: pdf.render Their tool does a lot more, but most people don’t need all that. A render function is not worth the price they are asking.