Your app might create files at runtime that you want to have a look at.
Follow these steps to copy them to your development machine:
Make sure that
adbis setup properly and your device is running in developer mode. It is not necessary to root the device.
Open a terminal window and enter
To be able to access the app’s files enter
Look for the file your are interested in (e.g. cd into the subfolders “files” or “databases”) and copy it to the sdcard
cp <file-name> /sdcard
Open a second terminal windows and copy the file to your development machine
adb pull /sdcard/<file-name> /Users/<user-name>/Documents