I was truly impressed at how well the concept of this app was executed. The interactive street show was a very original idea and worked mostly as intended (if you don't lose internet connectivity in the middle). The augmented reality course was also very cool. We weren't able to find the symbol at the third location though. Some additional clues should be given if necessary. Overall, very worthwhile experience for an event that deserves more attention than it does!
Now includes support for Android 4.4+