Tried it on some pretty noisy pictures and 'pushed' the "Noise Level" indicator to 60 from the default 20.
And the results were great. Though the EXIF data was lost, but the output file is very clearly smoother and less grainy than the orinigal file which I backed up.
I think the strength of this software over Neat Image, is that it is so much easier to use.
Now if only it allowed batch processing of all the files in a same directory, using default options and saving them in the same directory with a suffix behind.
It will really speed up processing time of having to open each file individually, processing it and save it, giving it a new name...
The Professional version seems to allow batch operations.... too bad it's still under development. Won't mind paying a small fee for such a great program.