It's easy to miss, but boy, Pokémon lore can get pretty bonkers sometime. Case in point: the Pokedex entries for X & Y, where you might learn about things that are either amazing, creepy or just plain nonsensical.
Yes, there's a Pokedex app for iOS—two actually, one official, another (better) one fan made. But you don't need to download either to turn an iPhone or an iPad into a Pokédex. Just ask Siri.
I've never used the Pokémon compendium known as the Pokédex much in the Pokémon games, but the idea of having a physical Pokédex is still really cool. Sure, you could buy a toy Pokédex, or, you can put a decal on your red 3DS to make it look like one instead!
Released last month in Japan, the official iOS Pokédex application is now available in North America and beyond, giving Pokémon fans around the globe access to the ultimate pocket monster compendium. Just don't expect a kindly tree-named professor to hand it over for free.
The North American iTunes store is chock full of amateur Pocket Monster catalogs, assembling data from the popular Nintendo creature collecting series. They might soon be obsolete, should the official Pokedex for iOS released today in Japan make its way stateside.