Swipe down on the Home Screen and use Spotlight Search to look for the app name
Check the App Library by swiping left past the last Home Screen page
Open the App Store, tap your profile, then tap Purchased to see installed or previously downloaded apps
Go to Settings, then Screen Time, then Content & Privacy Restrictions, and check allowed apps
Go to Settings, then Home Screen, and make sure newly downloaded apps are set to appear on the Home Screen
Check for hidden Home Screen pages by long-pressing the Home Screen, tapping the page dots, and re-enabling pages
Look in the App Library folders such as Recently Added, Utilities, or Social
Search inside Settings for the app name to see if it is installed
Check whether the app is inside a folder on the Home Screen
Ask Siri to open the app by name
Restart the iPhone if the app is not appearing normally
Update iOS if app visibility issues continue