Hi there Dan P,
It's important you have the right software in order to keep track of your books. QuickBooks Desktop is a great software able to help you keep track of your transactions so you can easily see the financials of your business. I can provide some information about QuickBooks Desktop system requirements.
The Canadian version of QuickBooks Desktop is made to run on Windows operating systems, so it wouldn't be able to run on a Mac operating system. This information, as well as all system requirements needed to run QuickBooks Desktop 2019, can be found here.
If you have any other questions, feel free to reach out here.