|Master of the Zero One|
You mean you can't save the tiles you make (according the the reviews)!?
No you can't save tiles. This is a PDF, not a software. It has been specifically designed for making dungeons and print them on the fly.
However, you can make a shot of the screen and save it for later use (enlarging to double should be enough to get a good print resolution)
You can see how it works for free by downloading a demo here: