4. Mobile users can take advantage of Spotify as well. Regular users can stream their personal libraries through the spottily app on their iPhones, Androids and BlackBerrys. Premium users can stream Spotify from their phones as well as a few other devices. After 3 months of usage, free users are required to purchase an unlimited or premium plan, which are $4.99 and $9.99. But after 3 months of having virtually any song you want to hear at your disposal, you probably won’t mind upgrading.