Re: Apps that you love (iPhone)
Spotify is great, not only because I can stream music on the go, but also because I can download the files straight to my iPhone without faffing around, and can then listen to them easily on the tube.
Speaking of the tube, I also got a tube map (called Tube Map Pro, as it was so good I got the full version), which helps you plan journeys on the London Underground. It also gives you information on line updates, and tells you how much you have left on your Oyster card. I also have a separate Oyster card app that shows you what journeys you have taken.