If purple or violet is your favorite color, you have a deep need for emotional security and to create order and perfection in all areas of your life, including your spiritual life. You also have a deep need to initiate and participate in humanitarian projects, helping others in need.
Some apps store their save games/configuration data files on /sdcard/APPNAME/ , or just on the /sdcard/. To be able to use root apps, you'll need to have rooted your Android device and have given permission from one of the superuser apps.
Even apps that don't allow you to fine-tune data settings could still be loading background data. In Ice Cream Sandwich and later versions of Android, one way to find out which ones are guilty is to go to Settings > Data Usage, and scroll down to reveal a list of apps with accompanying data usage stats.