Graphical Analysis 3 is a legacy program for graphing and analyzing data on Windows and Mac computers.
The final version of Graphical Analysis 3 for macOS (version 3.8.4) was released on May 9, 2011 and only supports macOS 10.14 and older. It is not compatible with macOS version 10.15 and newer.
The Windows version of Graphical Analysis 3 can no longer be distributed due to licensing reasons.
Depending on your computer’s operating system, consider using Logger Pro or the current Graphical Analysis app instead.