Can I Download The Mac App Store For Mac OS X 10.5 Leopard? The Mac App Store is only available for users of Mac OS X 10.6 Snow Leopard and higher. The Mac App Store will not work with Mac OS X 10.5 Leopard... Read answer Asked by Dennis M. on January 17th, 2012 Filed Under: Mac OS X, Leopard, Mac OS X 10.5 Leopard, Mac App Store, Snow Leopard