A free and ad-free cosmic spirograph app. Slide the main (unseen) centre of gravity around the canvas at the top, while a star (gold) will orbit around it, a planet (bronze) will orbit around the star, and a moon (silver) will orbit around the planet - all three painting while they go.

Change the opacity and colour values and the orbital speeds of the objects using the sliders, and select alternative distances for each of the objects from their gravitational parent via the buttons at bottom right. You can clear the canvas to start again or save the output to your device.

Designed using the Droidscript IDE.