Besides the transferring function, it also has so many practical and user-friendly features: sort your files automatically, manage playlist, refresh devices, and backup iPhone 4S SMS/MMS/Contacts.
And it also supports iPhone, iPhone 3G, iPhone 3GS, iPhone 4, CDMA iPhone 4, even iPod touch 4, etc. With this iPhone 4S to Mac transfer, you will find that it is much easier to manage your iPhone 4S files.