Based on my research on the Internet, I must say that FlightLevel LogBook 2000 doesn't appear to support Mac and iOS operating system. Mac and iOS are two different operating systems released by Apple for their products.
Currently, the only way to to run FlightLevel Logbook 2000 on an Apple operating system is through virtualization. This can be achieved with the help of Parallels Desktop or Bootcamp.
Parallels Desktop is a shareware app that allows you to run Windows in a window. You just drag the Windows app and then you can install it. It acts as a full working operating system.
Bootcamp on the other side will install Windows next to Mac, meaning that it will run Windows on Mac, and yes it's possible.