Looking for the entire selection of Pantone swatches all in one portable, user-friendly solution? Yep, there's an app for that. In addition to having the entire color library at your fingertips, the myPantone app also affords the ability for users to create and share their own color palettes with the user community.
You can grab the myPantone application over at the iTunes store for $10. Their myPantone community is fairly active as well, so checking them out before taking the plunge might give you a better idea of the what you're jumping into.