Give up trying to “catch ’em all” in Pokémon GO, because it’s never going to happen.

Seriously. No matter how much time you put into the game, you will never catch all 151 pocket monsters from the first generation. Right now, it’s only possible to collect 142 of them. Here’s why.

Nintendo, unlike many software developers, has chosen to ignore the goldmine that is Apple’s App Store by refusing to develop its titles for iOS. It’s almost guaranteed that the Japanese company would make an absolute killing if it just brought fan favorites like Super Mario, Zelda, and Pokémon to our iPhones and iPads. But president Satoru Iwata is adamant it will only develop titles for its own hardware.

There are signs, however, that Nintendo is cracking. It just released its first paid iOS app, a mobile version of the Nintendo 3DS’s Pokédex, to customers in Japan.