iphone apps in Paris without internet

I have been reading on availability of free wifi in Paris in certain places.

I have iphone but wont have 3G with it, so when I come to Paris, are there any apps relevant to Paris tour that I can run on iphone without internet?

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Read up on the Metro apps. I don%26#39;t recall the exact name of it, but I downloaded one to my iPod touch that looks like it let%26#39;s me plan out specific journeys even when I%26#39;m not using wifi.

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The MetrO app is what you%26#39;re looking for:

http://nanika.net/Metro/

It%26#39;s available for a variety of smartphones. I%26#39;ve downloaded it for my BlackBerry and plan on making good use of it in both Paris and London.

You also won%26#39;t need an internet connection to use it on your phone - it downloads all the data to your phone.

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Thank you all.