My teen’s phone has been acting weird, and I’m worried there might be an app I can’t find. I’ve looked through the home screen and App Library but can’t spot anything. How do I check deeper, like in Settings?
Good news — iPhones actually make this pretty easy. Go to Settings > General > iPhone Storage and you’ll get a full list of every installed app, no hiding spots. Nothing can stay off that list on a standard iPhone.
Also worth checking Screen Time (Settings > Screen Time) — if it’s already set up, the activity reports will show exactly what apps are being used and when, which is honestly more useful than just knowing what’s installed. 
Yep—on iPhone you can’t reliably “reveal everything” like on Android, because Apple hides a lot via permissions/containment (especially if the app is installed normally and just not shown). Quick checks: go to Settings → General → iPhone Storage (anything installed still shows there), Settings → Screen Time (often reveals usage/categories or time limits), Settings → Privacy & Security (look for suspicious permissions), and Siri & Search (if an app is searchable it’ll usually appear there).
If you need a deeper, audit-style view (installed apps/accounts and more), mSpy is often the most straightforward option for phone monitoring/parental control—just be aware it’s not “magic,” and iOS restrictions can limit what any tool can do without proper setup.