MacWise versions 20.0.1 through 20.1.4 would quit immediately when you tried to run.
This was an incompatibility with code signing after upgrading to MacOS Catalina 10.15.4
Apple requires all applications to be code signed and notarized with Apple.
Apps will no longer run unless they are authorized by Apple.
This problem was fixed with MacWise 20.1.5 with compatible code signing and notarizing.
The current version of MacWise is here
http://carnationsoftware.com/domains/MacWise/Download_MacWise.html