As you can read I removed the download link, so the feedback you might get will be limited to these 2 screen shots.
The screens look nice, but I don't think many people who want to ping need a GUI to do it. Moreover, the days of DOS are gone for some 20 years (Windows 95 came out in 1995), so I think nobody needs a DOS tool anymore.
But if they want to run ping from the GUI, they might prefer a Modern look and feel above a classical Windows look and feel. Or maybe want a cross-platform app that also can be used on iOS and Android.
And, of course, I would never advise anybody to never hire a freelancer who doesn't know the difference between DOS and the command prompt in Windows.