Plotting simple histograms is straightforward with Gaston. All it requires is gnuplot.
I’m not sure if gnuplot has fixed the aqua term – this is a nice, MacOS-only graphical terminal that stopped working some time ago. If you decide to try Gaston, you may attempt
set(terminal="aqua")
prior to plotting. If it doesn’t work, please let me know and try either "qt", "wxt" or "x11" instead.