This way, you can carry the app in your pocket whenever you're on the move. Otherwise, you can store CopyTrans TuneSwift on a USB flash drive or similar storage unit, and run it on any computer. Since installation is not a prerequisite, you can just drop the executable file anywhere on the hard drive and run it directly. CopyTrans TuneSwift is a portable piece of kit that gives you the possibility of backing up your iTunes library or transferring it to another source, in case your files get damaged or accidentally deleted.