We use UltraNav for the Westwind. It really is a great program. We do 135 and our POI allows us to use UltraNav for ALL of our performance calculations including C.of.G.
We too wanted to use the program on a PDA but UltraNav no longer offers that version of the software due to it's instability with Palm OS'. Apparently Palm style PDA's use a (term used loosely) hacked version of Windows, and the software had a tendency to lock-up and/or crash.
So now we just whip out the laptop and use our portable printer.
There is a program out there called EFB-Pro. I would check them out. They have performance for the KA200C.
Here's the link;
http://cavucompanies.com/CAVU/EFB-Pro%20feature%20page.htm
Good luck with the search.