I wanna develop an App for a personal project using an Arduino with Ethernet Shield connected to my router. The thing is I am not an App programmer, but I worked in the past with a similar system in which I programmed the hardware and had a GUI Developer to develop the App, I only had to create the interface without any programming and it automatically generated the code. I am looking for a GUI Developer like this, that is cross-platform, and I can develop an App able to connect to my Arduino through TCP/IP. I actually found some options but they are paid, and are not cheap. Does someone know some GUI Developer like the below but free or with a low cost.
This are the softwares that I found:
About as cross platform as you can get is use a web page for the GUI.