Yes, you are right, but i have written this tool mainly to enable the checksum feature. Many users at our board could not apply an xdelta patch to their ISO even if it was dumped from the same game used to create the patch. Another reason why i made this tool is that i don't like .NET Framework for simple tools (it's seems to shoot a fly with a bazooka
). As far I know all the xdelta frontend, not only yours, need .NET to work and Mono doesn't support Windows Form (i like making cross-platform tools
-EDIT- For the final user there is Delta Patcher Lite, which is the same of xdeltaUI plus checksum enabling/disabling and original file backup.