How to add an app back to your Home Screen on iPhone and iPod touch — Apple Support

If you delete an app from your home screen, it remains in your app library and can be easily restored. To add it back, swipe left until you reach the app library, then search for the desired app. Touch and hold the app icon in the search results, and tap “Add to Home Screen” to restore it.

Summary:
– Apps removed from the home screen are stored in the app library.
– To restore a deleted app, swipe left to access the app library.
– Use the search field to locate the desired app.
– Touch and hold the app icon in the search results.
– Tap “Add to Home Screen” to restore the app.