As anticipated a few weeks back, a TOPLAP themed iPhone/iPod app is
now available (for free download) from the iTunes store (link would
take you to the app store page):
A cross between noise generator, puzzle game and small instruction set
sound synthesis interpreter! Hope it works for you (should work on
iPhone OS 2.0 or better through 3.0); don't worry if no sound after
adding a few instructions, persevere or press question mark...