I'd really recommend that you use it on a computer because it gets you better quality, most of the time, when doing so. If you do decide to use the computer click here for the connect information and click here for a detailed guide on getting it setup on the computer.
If you really want to get it on your phone it's paid unlike the PC/OS X version which is free. If that doesn't bother you click here for the download pages of all the versions or just go to iTunes or Google Play directly to download from there. For both of them its a pretty straight forward way of installing it so I'm not going to go into detail because I don't know it off the top of my head.