The best mobile city guides?

I had a question in from Mark Westall of FadMag. He writes:

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Ewan

Do you know, (I’m sure you do) of any cool city guides for mobiles ?

regards
Mark

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Well Mark, a few come to mind but I’d like to open this question to the readers and see what they suggest?

Here’s some I’m aware of:

– http://www.mobiexplore.com/ (Croatia only!)
– http://www.mobiletrails.com/
– http://www.audiotravel.com/ (MP3 Audio Tours)

And of course, Lonely Planet for Mobile (which I know the MIR Show chaps, Dan, Ben and James really rate):

– http://www.lonelyplanet.com/mobile/

What other suggestions do you have?