I've written quick and dirty GUIs in Racket on the Raspberry Pi 4 and 3. I've found the 1gb memory on the PI3 with an editor open, Raspbian running, and a pdf,

I've written quick and dirty GUIs in Racket on the Raspberry Pi 4 and 3. I've found the 1gb memory on the PI3 with an editor open, Raspbian running, and a pdf, I have about 300mb free for another app. It can be a little tight with a 150-175mb Gui written in Racket, but on a 2gb PI4 the extra breathing room helps a lot.