Can I prevent my Apps from being deleted?

The newer versions of iOs make this very easy ( see http://www.apple.com/ios/ for instructions on updating your version of 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.