The mobile apps let you download songs for listening offline, too — you can just cache them from anywhere without having to plug back into your computer. (howtogeek.com)
After that, it only costs you $ 9.99 per month and provides more functions like listening offline, playing on - demand, no ads, etc.. (sidify.com)
You can save tracks for listening offline — as many songs as you'd like if your device has enough space. (sidify.com)