All of your purchased apps are connected to your Google account so you won;t lose the app itself. If you want to backup your app data, the best was to do backups is with the Titanium backup app but you need to be rooted. Another option is the Helium backup app which doesn't require root. It works.i see there are some backup apps in the Store but then I read reviews about them not working.. Can it just be done manually via connection to computer? There's really just one app I want to back up in case there is ever an update to it that breaks it.