The free way to block porn on an iPhone is Screen Time. Go to Settings, then Screen Time, then Content & Privacy Restrictions, then App Store, Media, Web & Games, then Web Content, and choose Limit Adult Websites. Protect the setting with a Screen Time passcode you don’t know by heart. For wider coverage, set Google SafeSearch to Filter and add a family DNS filter such as Cloudflare’s 1.1.1.1 for Families.
Below are the exact steps for each layer, what each one covers, and where they fall short.
Method 1: Turn on Limit Adult Websites in Screen Time #
Screen Time is built into every iPhone and costs nothing. Apple’s support page on content restrictions gives these steps for a child’s device. On your own iPhone the menus are the same, minus the step where you pick a family member.
- Open Settings and tap Screen Time. If you’ve never used it, turn it on.
- Tap Content & Privacy Restrictions and switch it on.
- Tap App Store, Media, Web, & Games.
- Tap Web Content.
- Choose Limit Adult Websites.
Apple offers three choices here: Unrestricted, Limit Adult Websites, and Only Approved Websites. Only Approved Websites blocks everything except a list you approve. It’s far stricter and gets frustrating quickly for an adult’s daily browsing, but some people use it for a period when they want a hard boundary.
Menu names can shift slightly between iOS versions. If you can’t find a step, search Settings for “Content & Privacy.”
Set a Screen Time passcode you won’t remember #
Apple asks for your Screen Time passcode when anyone tries to change Content & Privacy Restrictions. If you set a passcode you know, undoing the block takes five seconds, and that’s not much of a barrier at midnight.
Options, from least to most effective:
- Pick a random code and write it on paper, then put the paper somewhere inconvenient, like in a drawer at work.
- Ask a trusted person to type in a code that only they know. A partner, friend or sibling works. They don’t need to know why if you don’t want to say.
- Let an accountability app or partner hold it as part of a wider arrangement (see below).
Be realistic: you can still find ways around it. The goal is to add enough delay that an urge passes before you get there.
Method 2: Set Google SafeSearch to Filter #
SafeSearch hides explicit results in Google Search. According to Google’s help page, the Filter setting “blocks all explicit results,” while Blur only blurs explicit images.
- In Safari or the Google app, go to google.com/safesearch.
- Sign in if you use a Google account, so the setting follows you.
- Choose Filter.
Google is clear about its limits: “SafeSearch only works on Google Search. It doesn’t affect content on other search engines or websites.” Treat it as one layer on top of Screen Time, not a replacement.
Method 3: Add a family DNS filter #
A DNS filter blocks adult domains before they load, across apps as well as the browser. Two free options:
Cloudflare 1.1.1.1 for Families. Cloudflare’s iPhone setup guide recommends its free app:
- Install 1.1.1.1: Faster Internet from the App Store.
- Open the menu and go to Advanced, then Connection options.
- Under DNS settings, choose 1.1.1.1 for Families with the option that blocks adult content.
The app applies the filter on every network, including cellular. You can also set the DNS manually to 1.1.1.3 and 1.0.0.3 in a Wi-Fi network’s settings, but Cloudflare notes that manual setup only applies to the Wi-Fi network you’re connected to and doesn’t cover cellular data.
At home, filter the whole network. Setting a family DNS on your router covers every device on your Wi-Fi at once. See how to block porn on your Wi-Fi router.
The weak spot: a DNS app is an app, and you can switch it off. Pair it with the Screen Time passcode trick if you want it to stick.
Method 4: Paid blockers and accountability apps #
If the free layers aren’t enough, paid services add stronger filtering, tamper alerts or reports to a trusted person. A few that support iPhone, with prices as listed on their own sites in September 2026 (check current pricing before you buy):
| Service | Approach | iPhone | Listed price |
|---|---|---|---|
| Covenant Eyes (Victory) | Blurred screen accountability shared with an ally, plus blocking | Yes (iOS 15.1+) | $18/month or $198/year |
| Canopy | AI filtering of explicit content on websites and AI chatbots | Yes | From $8.33/month, billed yearly |
| Ever Accountable | Weekly activity reports to partners, optional filtering | Yes | $14.99/month or $129/year |
| Truple | Random screenshots with AI flagging, sent to a partner | Yes | $16/month or $160/year |
| BlockerX | Adult-site blocking, accountability partner, community | Yes | Free version; paid plans available |
We compare these in detail in the best porn blocker apps, and whether you need one at all in Screen Time vs. porn blocker apps.
What blocking can’t do #
Blocking is useful, but it’s half a plan:
- You control the device. Any block you set, you can find a way around. It delays; it doesn’t prevent.
- Filters miss things. Automatic filters work from lists and classifiers, and new or mixed-content sites get through.
- Social media is its own problem. Suggestive content inside social apps often isn’t covered by website filters. Unfollow, mute or remove the apps that lead you there.
- Blocking doesn’t touch the urge. The stress, boredom or late-night habit behind it is still there.
That’s why a blocker works best alongside a plan for the moment an urge hits. Full Clear isn’t a blocker. It covers the other half: a free panic button that walks you through breathing, your own reasons and a 90-second timer, plus a free urge log that shows which hours and situations catch you. Our guide on dealing with porn urges explains the routine.
Frequently asked questions #
Does Limit Adult Websites block all porn? #
No. It relies on Apple’s automatic filtering, which catches many adult sites but not all of them. Think of it as a strong first layer. Adding SafeSearch and a family DNS filter covers more gaps, and a paid filter covers more still.
Is there a free porn blocker for iPhone? #
Yes. Screen Time’s Limit Adult Websites, Google SafeSearch and Cloudflare’s 1.1.1.1 for Families app are all free. Together they cover the browser, Google results and domain lookups across apps.
Can I block porn on iPhone without someone else knowing? #
Yes. You can set up Screen Time, SafeSearch and a DNS filter entirely on your own. The only reason to involve someone is to hold the Screen Time passcode, and they don’t need to know what it’s protecting.
Why do I keep turning the blocker off? #
Because you can, and because an urge makes the cost of undoing it feel small. That’s normal. Make the passcode harder to reach, and add a plan for the urge itself so you’re not relying on the block alone.