It's possible for you to customize (re-brand) this without having to modify the Objective-C source code - and have multiple applications with different content.
The application has a text file in CSV format (which you can create in Excel) that on each line contains Cat Character and Quote. For instance, this code could be used to do a "He Said, She Said" type of app with human characters instead of Cats.
All you need to do would be to come up with the Graphics (App Icon, Image for Male character, Image for Female character) and the quotes.
Developer willing to assist in making enhancements/customizations on an hourly basis to be negoiated.
If the bid is $1000 or more - this will include 3 free hours of development time.