Shader toy on iPhone

Hello all!

i saw that the shader toy app(LINK: https://play.google.com/store/apps/details?id=com.simongreen.shadertoy&hl=en is available for Android. Can anyone please let me know if a similar thing is available on ios?

PS: This app can be used to edit shaders on the phone!
Thanks!

Does a WebGL page works on iPhone ?
http://www.iquilezles.org/apps/shadertoy/
http://www.kickjs.org/example/shader_editor/shader_editor.html
http://shaderhouse.neodyme.net/

Thanks for the links ZBuffer! Well it seems WebGL is not supported on my OS currently(i have ios 4.2), Maybe an upgrade would do it i guess. Anyway, thanks for the links!