I've always ahted buying music specifically for my iphone... so, this drive let's me easily add any song I can find off the internet, or even tv shows and movies to the drive and then play them on my phone. So, now with 128gb of storage, I can watch a movie wherever I am, without having to have wifi or cell service.
Its plug and play once you download the app. Which makes it even more convenient. A window pops up each time I plug it in and prompts me to let it connect to the app. After that, its just a matter of hitting play and away I go.
The price could be a little lower, but this thing is solid, and amazing. I'm glad I got it!