Okay, I once made a homebrew pixeleditor called Smoove for Sony PSP and an unfinished one for the Nintendo DS. Today I discovered this pixeleditor for the iPhone, called 32×32. It looks very interesting. It features only 32×32 pixels and grayscale 5-colors palette. The usability aspects of doing pixels on the go seem to be solved in an elegant way. Just see for yourself:
The app should be available at the iPhone app store in some weeks. The price will be about 0.99 cent. (via)