Some time ago, I made a toy web app that creates fractals like the Julia set via functional iteration: http://notmatthancock.github.io/software/func-iter/ http

Some time ago, I made a toy web app that creates fractals like the Julia set via functional iteration: http://notmatthancock.github.io/software/func-iter/ http://notmatthancock.github.io/software/func-iter/ There's more on how it works and so forth if you go to the explanation link. Edit: it's computationally intensive to create the fractals, so it's not very suitable for mobile (although, there's a progress indicator).