The POKÉDEX for iOS is now available as an app in North America and Europe for compatible iOS devices. It was released on December 10th, 2012. The Japanese version was released on November 16th, 2012. iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4h generation), iPod touch (5th generation), iPad 2, iPad Mini, or new iPad are all compatible if they have been updated to iOS 6.0 or later. The app can be purchased from the Apple store for $1.99/£1.49 and it includes data from the 5th generation of Pokémon (494 to 647). Additional packs for the other 4 generations can be purchased for $5.99/£3.99 each. Function wise, the app will be similar to the recently released Pokédex 3D Pro for the Nintendo 3ds.


Source: http://pokedexios.com