Deleting the app bypasses your blocker. Here is the fix

Adults can always delete a Screen Time blocker; Apple documents it. One setting, behind someone else's passcode, closes the door.

Here is the loop. You install a blocker, it works for three days, and then one night you hold the icon, tap the delete option, and every block is gone. Reinstall in the morning, repeat. This page explains why deleting works, what Apple says about it, and the one setting that closes the door, with the exact path and the wording from Apple's own pages.

Why deleting the blocker removes every shield

On iPhone, a real app blocker does not run "in the background watching you". It hands its rules to Apple's Screen Time system. The block you see over Instagram is a setting the blocker applied through Apple's Managed Settings store, which Apple describes as "a data store that applies settings to the current user or device". Apple also notes that "changing the value of a setting to nil deletes your app's configuration for that setting from the device." When the app is deleted, its configuration goes with it. No app, no settings, no shield.

The obvious question is why Apple lets you delete it at all. The answer is in the Family Controls documentation, and it is different for children and adults:

"The Family Controls framework prevents child users, authorized by a parent or guardian, from performing actions that might circumvent the parental controls settings. For example, authorizing an app prevents the child user from deleting the app that provides parental controls."Apple Developer Documentation, Family Controls

"After an individual authorizes your app, … the system removes any restrictions that prevent the user from bypassing parental controls so the user can delete an authorized app or sign out of iCloud as needed."Apple Developer Documentation, requestAuthorization(for:)

So a child gets a wall, and an adult gets a door. If you are blocking yourself, you are the adult, and the door is open by design. Any blocker that claims it cannot be deleted on an adult's phone is either describing a child account or describing the Screen Time setting below and taking credit for it.

The setting that closes the door

Apple's parental-controls page describes the control: "You can prevent your child from being able to install or delete apps, make in-app purchases in apps installed from the App Store, and more." The steps it gives are: open Settings, tap Screen Time, tap Content & Privacy Restrictions, then "Tap iTunes & App Store Purchases. Choose a setting and set to Don't Allow." The iPhone User Guide's App Store page says the same thing in one line: "Tap iTunes & App Store Purchases, then choose restrictions for installing or deleting apps and in-app purchases."

Apple writes those pages for parents managing a child, but the same section exists on your own phone under your own Screen Time. Here is the path on iOS 26, row by row:

What changes: deleting apps is no longer allowed on the phone, for every app, not just the blocker (Apple's wording: prevent "being able to install or delete apps"). That is the point. You cannot make one app undeletable on iPhone; you make deleting a restricted action for the whole phone.

Two more rows on the same screen worth knowing

• Installing apps. The same section covers installing. If your pattern is "delete the blocked app, reinstall it fresh", setting installing to Don't Allow closes that too. It also means you cannot install anything until the passcode holder unlocks it, so decide whether that trade is worth it for you.
• Offload Unused Apps. This is not in Screen Time; it is in Settings › Apps › App Store. Apple describes it as "Automatically remove unused apps." A blocker you never open is, from iPhone's point of view, an unused app. Turn this off so the system does not remove your blocker for you.

Why the restriction is worthless without the passcode-holder pattern

The Deleting Apps setting is one toggle. If nothing is in front of it, you will flip it back at midnight and delete the blocker thirty seconds later. Apple's answer is the Screen Time passcode: once set, it "must be entered before you can change the settings you've chosen for yourself." Removing it goes through Change Screen Time Passcode › Turn Off Screen Time Passcode, which asks for the current code.

That only works if you do not know the code. The pattern:

1. Choose your holder. Someone who will not enjoy the power and who you will see in person within a week.
2. Go to Settings › Screen Time › Lock Screen Time Settings. Hand over the phone. They enter a four-digit passcode, then enter it again to verify. You do not watch.
3. With the passcode set, they turn Deleting Apps to Don't Allow (the path above). Now that switch, Downtime, App Limits and Screen Time itself are all behind their code.
4. Agree on the asking rule: in person, in daylight, once a week at most.
5. Decide about the back door together. Apple notes that after setting a passcode for yourself, you can set up Screen Time Passcode Recovery, which lets you reset the passcode with your Apple Account. If recovery is on your own Apple Account, you can reset the code alone. For most people the right choice is to leave recovery off and let the holder be the recovery.

The whole design in one sentence: the block must be harder to undo than to keep. One toggle is easy to undo. A toggle behind four digits held by another human, who you have to face, is not.

What a good blocker tells you about this, and what Unbudge's screens say

A blocker that is honest about deletion says so on its own screens instead of letting you find out. Since we build one, here is exactly what Unbudge shows, so you can compare it with whatever you are using.

In onboarding, before anything is blocked, the first screen is titled "One honest thing first" and says: "If you delete Unbudge, the blocks stop. iPhone allows that. To make it harder for future you:" followed by the path above, and "Then set a Screen Time passcode that someone you trust keeps."

In Settings, under "Prevent deletion", the wording is: "Deleting Unbudge removes every block. iPhone allows that, we can't stop it. You can make it harder:" with the same path, and "Set a Screen Time passcode someone else keeps, and this becomes a real wall."

On the shield itself, the screen that covers a blocked app, the headline is "Unbudge is holding." Under it, one of these lines, depending on what is running:

• "Instagram is blocked by Bedtime. Break available in Unbudge." (the app name and the schedule name are yours)
• "Instagram is blocked for your 15-minute test. It unlocks at 21:19 on its own." (during the proof block that runs before any payment screen)
• With Strict mode on: "Strict mode is on, so breaks are off until the schedule ends."

During a normal schedule the shield has a "Take 15" button. Tapping it opens the apps for 15 minutes, and the break screen says: "Your apps are open until 21:19. Then they lock again on their own, even if you never come back here." Fifteen is not a choice we made; it is the shortest interval Apple's Screen Time system accepts (we measured 5 and 10 minutes rejected, 15 accepted, iPhone 14, iOS 26.5). The break screen says that too: "Breaks are 15 minutes because that's the shortest iPhone allows. We won't pretend otherwise."

On the Home screen, Unbudge reads the shield state back from the system every time you open it and shows "Shield is holding · checked 21:04", or "Shield should be up but isn't · tap to fix". If the first Screen Time authorization fails (our device log shows authorizationConflict on attempt 1, success on attempt 2), it retries up to three times and shows the exact reason if it still fails.

None of that stops you deleting the app. Nothing can. It tells you so, gives you the Apple setting that does, and holds inside the rules Apple actually enforces.

Checklist: is the delete door closed?

• Content & Privacy Restrictions is on.
• iTunes & App Store Purchases › Deleting Apps is Don't Allow.
• Test it: long-press an app on the Home Screen and confirm deleting is no longer offered.
• Offload Unused Apps is off in Settings › Apps › App Store.
• A Screen Time passcode is set, entered by someone else, and you did not see it.
• Screen Time Passcode Recovery is off, or you and your holder agreed it is on.
• Optional: installing apps is Don't Allow too, if your loop is delete-and-reinstall the blocked app.

Once the door is closed, the next weak point is usually the built-in limit screen; see How to stop yourself from tapping Ignore Limit on Screen Time. And if you are still choosing a blocker, App blocker for ADHD: what actually works on iPhone is the list of exits to check before you pay.

Questions people ask