Pandora One Mod Apk is the cracked version of the actual app, developed by android app developers which unlocks all the premium features of the original Pandora One app. The original Pandora One app gives freemium services.
By freemium, I tried to mean that free users do not get all the luxury features of the app. All the free users of the Pandora One app are likely to get irritated by the advertisements in between their favorite songs and no options to download songs and play them offline.