By default, it is very easy to delete third party apps on the iPad, iPhone, and iPod touch. You can delete an app holding on its icon until it begins to wiggle, tapping the "X" that appears above it, and tapping "Delete" in the dialog box that appears.
It is possible to prevent the deletion of apps, such as Proloquo2Go and Pictello, in iOS 4.2.1 or later (for instructions on updating your version of iOS, please see: http://www.apple.com/ios/). To activate this feature, go to the Settings app on your device's home screen, tap "General", scroll down, tap "Restrictions", tap "Enable Restrictions", create a four digit passcode and enter it again when prompted, and then toggle "Deleting Apps" to OFF.
We strongly recommend that you turn off the ability to delete apps to protect your Proloquo2Go customizations or Pictello stories.