[morzh]

I used KiCad briefly; I never created parts in it; just had to quickly fix a problem in an old board done before me.
I know that PADS Logic, unlike DxDesigner, was a free tool, that CAD software, then Mentor and now Siemens supplied for free.
As I remember (I have not used it for quite a while) symbol creation was not complicated in it either.
Especially, considering that we do not have to create a parameter database that would always accompany a real part used in real schematics: P/N, internal P/N, price, PCB footprint name, manufacturer, etc etc.
Pretty much graphics with pins.