How can you delete an app that is installed?

It depends on what you are using . For an iphone or ipad touch the app icon on the screen and it will start to jiggle. A "x" will appear on the icon, touch it and hold your finger on it. A message will appear asking if you want to delete it. Click yes. To stop the jiggle go back to you home button and press it. If you are on a Samsung tablet or phone you need to go into settings and find applications on the menu. Click that open and check the ones you would like to delete . Delete it and then close the settings.