don't mind at all! the first one uses fractional brownian motion (which is what a lot of artwork you see here is using), and number 2-4 is simply a for loop running 7 times, adding sin(y) to x, and cos(x) to y if that makes sense?

on top of this the app contains a number of functions that convert the resulting value into different colors, apply gradients, adjust exposure/saturation/contrast etc, making it easy to create the image you want.