iPhone Screen Time is already extremely powerful for blocking adult websites. Its web content restrictions apply across browsers on iOS, so you can limit adult content, block specific sites, set app limits, schedule downtime, and restrict new app installs without downloading another blocker.
But it has one flaw: if you know the Screen Time passcode, you can turn the whole system off.
When an urge hits, the bypass is always available. Tap a few settings, enter the passcode you chose yourself, and the block is gone.
A more complicated blocker won't fix this. What helps is making the restrictions you already have harder to bypass.
The simple idea
Use iPhone Screen Time to block porn. Then set a Screen Time passcode you do not know.
That sounds strange, but it is the part that makes the system work. A blocker only helps if you cannot disable it in the same moment you want to break it. Forgetting the passcode turns a five-second bypass into a real pause.
That pause matters. Most urges are temporary. If you cannot instantly remove the block, you give yourself time to cool down, move away from the phone, and make a decision from a clearer place.
Step 1: Turn on adult website blocking
On your iPhone, open Settings > Screen Time.
Then go to Content & Privacy Restrictions and turn it on. From there, open Store, Web, Siri & Game Center Content, then set Web Content to Limit Adult Websites.
This is Apple's built-in adult content filter, and on iPhone it applies across browsers. It is not perfect, but it is a strong first layer. You can also add specific websites under Never Allow if there are sites you know you are likely to visit. For the full walkthrough with screenshots, see the iPhone porn blocker setup guide.
Step 2: Close the obvious loopholes
Blocking websites is only one part of the setup. If you usually bypass restrictions through apps, alternative browsers, social apps, or private browsing workarounds, close those paths too.
- Use App Limits for browsers and apps that lead you back into porn.
- Use Downtime for the hours when you are most likely to relapse.
- Restrict installing new apps if you tend to download another browser or workaround app.
- Add problem sites manually to Never Allow.
The goal is not a perfect block. You just want to remove the easy routes you take without thinking.
If your main concern is that you will simply delete whatever you set up, this guide covers a blocker you can't uninstall, including how to stop yourself reinstalling a browser around it.
Step 3: Set a passcode you cannot remember
This is where WaitToUnlock comes in.
WaitToUnlock generates a random Screen Time passcode and guides you through entering it on your iPhone using a confusing sequence of digits and deletes. By the end, the correct passcode is set on your phone, but you have not memorized it.
WaitToUnlock stores the passcode encrypted. When you genuinely need it later, you can request a reveal. But you do not get it instantly. You have to wait.
Step 4: Close the Forgot Passcode loophole
When iOS asks whether you want to set up Screen Time passcode recovery with your Apple Account, do not link your own account. But be aware that tapping Cancel is not enough either: iOS still offers a Forgot Passcode? option later, and it accepts the iCloud credentials you are already signed in with. During an urge, that is a five-second reset.
The reliable fix is to set the recovery account to one whose password you do not know (full guide). WaitToUnlock's Complete Lockout feature handles this: you create a fresh burner Apple Account with a password the app generates and then locks away. With that account as your recovery, Forgot Passcode no longer gives you an instant reset.
Why this works better than willpower
Willpower requires you to make the right decision while you are already tempted, which is when you are least able to.
A Screen Time passcode you don't know changes the situation. You no longer need to make a good decision in the moment, because the block cannot be removed immediately no matter what you decide.
That does not solve every part of quitting porn. You may still need support, replacement habits, better sleep, fewer triggers, or professional help if the behavior feels compulsive. But it does remove one of the most common failure points: instant access.
What wait time should you choose?
If you are just testing the setup, a short delay can prove the system works. But if you are serious about quitting porn, a longer wait is usually better.
A 24-hour wait means you cannot undo your restrictions during a late-night urge. A 1-week or 1-month wait turns the setup into a stronger commitment. You can still get the passcode back eventually, but not in the moment when you are most likely to regret it.
The short version
iPhone Screen Time can block porn. WaitToUnlock helps you stop yourself from turning those blocks off.
Set up the restrictions, forget the passcode, close the Forgot Passcode loophole with a burner recovery account, and make any future unlock request wait. That bit of friction can be the difference between acting on an urge and letting it pass.