In my experience with iOS 18, you can only hide third-party apps, like Instagram and Twitter. Here's how you can hide these apps on your iPhone. 1. Long press an app. 2. Tap Require Face ID.
The iOS 18 passwords app is locked with Face ID. When you open the app for the first time, you’ll be asked if you want it to send you notifications. I said no, but obviously it’s up to you.