The most recent released version is 1.0. Zudoku Help/About will tell you which version you are currently running.
The Users Guide is installed with Zudoku, but if you would like to see it now, Click Here
Some day we might put a price on it, but for now we are pleased to offer current versions for free. You may share it with others, but the best way to share is to point them to this web site so that they get the latest version.
Although we provide no promises or warranties with Zudoku, we are anxious to make it better. Please send your comments and suggestions, as well as any problems you encounter, to zudoku@zippity9.com