Apps Won’t Open

Try a forced restart.

• Press and quickly release the volume up button

• Press and quickly release the volume down button

• Press and hold the side button.

• When the Apple logo appears, release the button.

Force restart iPhone - Apple Support (IN)

Delete the app, then re-download it

Delete the app. When you do this, you may lose data that was stored in the app. Then re-download the app. Then check whether the problem with the app is fixed.

If an app on your iPhone or iPad stops responding, closes ...