For a pretty long time now I have been using PCB boards.
They are very useful for prototyping things and making small electronics.
The problem I always face while using them, is that I never really plan ahead how I am going to put the components into the board, and how I am going to connect them.
I thought that maybe a program exists that can do that, but I never found one.
Thats why I started making this editor, to plan ahead my PCB board.
You should only use my editor when you have already designed your circuit. The editor doesn't simulate circuits because there are already way better programs for that.
(Try Falstad's circuit simulator, it's a very good simulator)