Quite Imposing Plus is an Adobe Acrobat plug-in. In other words, you use Quite Imposing Plus from within Adobe Acrobat.
When you buy Quite Imposing Plus, you're entitled to both the Macintosh version and the Windows version.
MACINTOSH SYSTEM REQUIREMENTS ARE AS FOLLOWS:
You should be running a compatible Mac system -
Ventura (macOS 13), Monterey (macOS 12), Big Sur (macOS 11) on Intel or ARM (M1, M2 etc).
MacOS 10.15 (Catalina), 10.14 (Mojave), 10.13 (High Sierra) or 10.12 (Sierra)
Before upgrading to macOS 14 (Sonoma) please check the status since there are known issues. Running 5.3m or later is vital
You should be running a compatible version of Acrobat -
Acrobat DC versions up to 23.x (including Creative Cloud)
Acrobat Pro 2020/2017/2015
Acrobat Pro XI (11), X (10) or 9.
WINDOWS SYSTEM REQUIREMENTS ARE AS FOLLOWS:
You should have Windows 7 or 10 or 11.
You should have installed the full commercial Acrobat 9.0/10.0/11.0/2015/2017/2020/DC Professional (including Creative Cloud) or 9.0/10.0/11.0/2015/2017/2020/DC Standard package on a suitable version of Windows.