Last week, a fake version of the game Pokémon Yellow was posted on the Apple App store and reached number 2 on the sales charts before the illegal app was pulled from the store. The popularity of the app has sparked debates on the Internet about Nintendo's stance on only releasing games for their platforms and not popular cell phone platforms such as iOS and Android. This has also brought Apple under fire for their app approval process which allowed the Pokémon Yellow app to be sold despite it being a blatant illegally posted version of the game. The Pokémon Company issued a statement to Develop and has asked fans to report illicit imitations of their games to them.

Pokémon Company issues warning to scammers

Nintendo subsidiary asks fans to report illicit imitations

“We continue to combat the unauthorised [sic] release of games, applications and merchandise that trick our fans into purchasing something that does not meet our quality standards,” The Pokémon Company told Develop.

“Fans who encounter questionable products should report to us immediately so we can keep other fans from falling victim to these scams,” The Pokémon Company, a Nintendo subsidiary, added.

Source: http://www.develop-online.net/news/39884/Pokmon-Company-issues-warning-to-scammers

You'd think Apple would at least test the app to see if it's working, but I guess they just don't bother if such an app found its way to the appstore.