Enter Tapman: Metallica Debuts iPhone App

Metallica aims to turn a generation of finger-tappers into headbangers with a new iPhone application. Tap Tap Revenge: Metallica, a variant of the top-selling Tap Tap Revenge game, lets players tap their screens in time to hits like Enter Sandman. The game, priced at $4.99, is expected to make it into the top 10 music apps at the iStore but the rockers say it's more about staying relevant than making money.

"It's one more thing that'll keep me semi-cool in my kids' eyes for another six months until the next thing comes out," says drummer Lars Ulrich, the father of two boys aged 8 and 11. "It's not about the money or revenue or some master plan. This stuff all falls in the fun category." (More iPhone stories.)