source:http://stackoverflow.com/questions/24022570/where-does-simulator-8-0-store-files

Something like this:

The Device ID can be a bit hard to find (basically, there’s one folder with a random-looking name for each simulator you have). To get to the correct folder, I used this terminal command:

Where myFile.txt was one of the files in my application. The terminal then printed out the full location—this might be more useful to you then checking each one-by-one, if you have a file (or, can make one) that you can search for.