Apps disappearing on iPhone after iOS update

• Did you look in the App Library by swiping all the way to the left on the Home Screen. You can swipe down in the App Library to view the apps alphabetically. If you find them there, you can move them back to any Home Screen.
• If you are in a region where Age Verification is required, such as the EU, and you updated from an iOS version before 26.4 to a recent version, then apps that had age restrictions would be removed without performing the Age Assurance checks required in that region.

Interesting, if improbable. What model phone, specific version of iOS, what apps? What, if anything have you confirm they have “disappeared” a d not just moved to an alternate home screen? You need to provide a little more i formation.