I’m becoming more and more a fan of Adobe’s iOS apps. In particular, I enjoy sketching in Adobe Illustrator Line. Pocket-lint.com provides a full accounting of Adobe’s full suite of apps for iPhone and iPad:

As part of its opening keynote for its developer and creative conference, Adobe will be announcing a more integrated desktop and mobile strategy, which centres around several new iPhone and iPad applications and some rebranded old favourites. ~ Pocket-lint.com