Although it is impressive that an app like this can be created in such few lines of code, I think it is a bad precedent as a programmer to have a goal to write as least as many lines as possible. It leads to hacks and unmaintainable code. I would rather have a method that has 10 lines of code that can be easily understood, then a method with one line of code that is only understood by the creator. That is not to say that one shouldn't focus as code reduction via re-usability, but one should always write code the can be understood by others.