From macgamesandmore:

With the 30,000 (give or take 10 to 20 thousand) iphone apps available at the Apple iTunes store, including free, paid and game apps, it can feel no less than overwhelming looking for quality apps. How do you find the needle in a hay stack? Millions of others like you and I browsing the app store feel this pain. The bad side to this is that there are too many poor applications and duplicates, triplicates and quadruplacates (if that’s a word). The good side to having a prodigious amount of apps is that within this sea of apps a significant number of them are really excellent. Yay. Of course, the problem of trying to locate those apps remains pretty elusive. This is why I’m only going to feature apps that stand out of the crowd.

Since apps haven’t really been on my radar, many of the great ones surely slipped by me but I serendipitously stumbled upon this ingenious Paris Metro iPhone App. Seriously, the developers of this one are Gods.

The Paris Metro iPhone App is a must-have app for residents of and tourists traveling in Paris. Forget the clunky paper maps and GPS with a battery life of about 3 minutes. You’ll only need your trusty iPhone 3G because this app takes full advantage of the augmented reality features.

Watch the youtube video of the demonstration (click on the image). It explains how it works. Note: It’s in French but the visual is self-explanatory.

The Paris Metro iPhone App is 99 cents at the iTunes store. Get it now.