Recommended apps for tourists in London?

[Italianoleone]

Hello, the greatest community in the world where it feels like home in this Android infested world

I've been a WP faithful since 2012 with Lumia 800. I will be finally getting a WP8 phone tomorrow and then on Wednesday I will head for London for a week with my family. Since there's no time to experiment with apps I'd love for Londoners and others who visited London to recommend few good apps to make the stay in this busy city as easy as possible for foreign tourists. I'm mostly thinking of apps for transport but any other app you've found useful is much appreciated. Thanks guys!

 

[gedzum]

Hi there. I liked using London Travel personally: London Travel Lite | Windows Phone Apps+Games Store (United States)

It allowed access to your current Oyster card balance, maps and underground status among other things. I found it useful and it may meet your needs. Hope you enjoy your stay in London

 

[Italianoleone]

Thanks, gedzum. Will definitely install this.
Any other useful apps Londoners/tourists are using?