I've accessed the developer's website and looked through the available options. I've found the XYZware software in the Downloads section. Before you have the possibility to download the software, an account needs to be created or if you already have one, use it on the page below to log-in.
Note: I've found it easier to attach my Facebook account to create a username just to download the application.
Note2: Also, the software is free to download and install. There is no need to buy it.