Your iPhone has a hidden app that’s NOT on your Home Screen – how to find it Charlotte Edwards, Digital Technology and Science Reporter 31 Mar 2021, 12:46 Updated: 31 Mar 2021, 12:46 APPLE fans will know iPhones come with lots of apps already built in but many won't know about the hidden Code Scanner app. The app came along with iOS 14 but you won't see it in the App Library and probably won't notice it at all unless you know where to look. 2 The Code Scanner app only exists in the Control Centre on your iPhone. To find it you first need to unlock your device and swipe down on the Home Screen.