Explore world of Lissajous Curves. Edit parameters or change them by sliding horizontally on touchscreen. You change one parameter at a time. Tap bottom of the screen to change active parameter (shown in red). Select "Autocycle" from menu to start animation (phase shift change). Available options include also change of color (green, red, blue, white). Curves are generated as follows:

X = amplitudeX*sin(f1*dT+fi)
Y = amplitudeY*sin(f2*dT)

Try some sample nice parameters:

f1=1.0, f2=2.0
f1=2.0, f2=3.0
f1=5.0, f2=7.0
f1=6.3, f2=7.7