I've used it (the older Excel-based version) on Windows 10 to produce digital negatives for pt/pd printing. What can I say? It does what it is supposed to do. That said, I've returned to other methods that provide more control and/or are easier to use. The only negative thing I could say about QCDN is that I could not get the latest native version to even install on my Windows system and Richard didn't seem to care about expending any effort to find out why.
it isn’t that I didn’t care about expending effort on it. It is that I’m not a windows developer, and windows has so many different versions, internal framework numbers and indecipherable errors that it was impossible for me to really know what was happening in your case. Microsoft is designed around people working in large companies and “the enterprise”, not really for solo self-taught people. Additionally the number people who purchased the windows version is such a small percentage of my sales that it isn’t economical to spend the countless hours chasing this for literally the single case where this is a problem.
If you are on MacOS, want do digital negatives or gravure, and want to have the best results with the least amount of work, then my software is what you want. If you are on windows, well, I’m sorry.