 On March 15, 2011, Microsoft announced that no new Zune hardware players would be developed, although existing models would remain for sale.The Zune had failed to capture significant market share after five years against the Apple iPod, and a recent study by NPD Group indicated that the Zune did not make the list of the five best-selling portable music players in the U.S.The iPod has been more successful because of simplicity and had better ratings.