The simplest way to block a website on Chrome for Android or iPhone
Chrome Mobile does not have a built-in blocking feature. You cannot open Chrome's settings and add a website to a blocklist. Instead, you have three real options: use a third-party app that blocks sites across all browsers, set up parental controls through your device's operating system, or use a DNS filtering service that intercepts requests before they reach Chrome.
The method you choose depends on what you are trying to block and why. If you want to stop yourself from visiting a site, a blocking app works. If you are managing a child's device, parental controls built into Android or iOS are more reliable because they work on every app, not just Chrome. If you want to block ads or malware across your whole device, a DNS service is the most thorough approach.
Key Takeaways
- Chrome Mobile has no native blocking feature, so you need either a separate app, your device's parental controls, or a DNS filtering service.
- Third-party blocking apps like Freedom or Cold Turkey work on Android and iOS but only block sites you visit through the app they control.
- Android's Digital Wellbeing and iOS Screen Time can block apps and websites at the device level, which stops access even if the user switches browsers.
- DNS filtering services like Cloudflare's 1.1.1.1 for Families block sites before they load, but require setup and may slow your connection slightly.
- No method is tamper-proof on a device you own — determined users can usually find workarounds.
Using a third-party blocking app on Android
Apps like Freedom, Cold Turkey, and AppBlock let you create a blocklist and set times when those sites are off-limits. You read the app, add websites to your block list, and set a schedule. When you try to visit a blocked site, the app intercepts the request and shows a blocking screen instead.
The catch: these apps only work if you use them as your primary browser, or if they have permission to monitor your network traffic. Freedom and Cold Turkey require you to grant them Device Administrator access on Android, which gives them deep control over your phone. This is safe with reputable apps, but it means you are trusting that company with significant access to your device.
These apps cost money — Freedom runs about $7 per month or $40 per year, Cold Turkey is a one-time $39 purchase. Some offer free trials so you can test whether the blocking actually works for your situation before you pay.
Using parental controls on Android (Digital Wellbeing)
If you own the device and want to block sites for yourself, or if you are setting up a device for a child, Android's Digital Wellbeing feature can restrict access to apps and websites. Open Settings, go to Digital Wellbeing & Parental Controls, and tap Parental Controls. You create a PIN, then set which apps and websites are off-limits and during what hours.
Digital Wellbeing blocks at the device level, which means the restriction applies no matter which browser you use — Chrome, Firefox, Samsung Internet, or any other. This is more effective than a Chrome-specific tool because a user cannot straightforward switch browsers to get around it.
The limitation is that Digital Wellbeing is designed for parental oversight, not self-imposed blocking. If you are the only person with the PIN, it works. If you are trying to block yourself and you know the PIN, you can unblock sites whenever you want. For genuine self-blocking, a third-party app with a separate account (so you cannot easily change the settings) is more reliable.
Using parental controls on iPhone (Screen Time)
iOS Screen Time works similarly to Android's Digital Wellbeing. Open Settings, tap Screen Time, then Parental Controls (if setting up for a child) or Content & Privacy Restrictions. You set a Screen Time passcode, then navigate to Allowed Apps or Web Content to block specific websites.
Screen Time blocks across all browsers on the device, so it is effective whether the user tries Chrome, Safari, or any other app. You can also set downtime hours when the entire device is locked, or allow only certain apps during specific times.
Like Digital Wellbeing, Screen Time is stronger for parental control than for self-blocking. If you set it up for yourself and you know the passcode, you can disable it. For self-imposed blocking on iPhone, a dedicated app like Freedom is more reliable because it uses a separate account you do not control.
Using DNS filtering to block sites across your whole device
A DNS filtering service intercepts web requests at the network level, before they reach your browser. When you try to visit a blocked site, the request never reaches the internet — the DNS service straightforward returns an error page instead. Popular options include Cloudflare's 1.1.1.1 for Families (free), Quad9 (free), and NextDNS (paid, with more customization).
To use these services on mobile, you typically install their app or change your device's DNS settings in the network configuration. On Android, go to Settings > Network & Internet > Advanced > Private DNS and enter the service's DNS address. On iPhone, go to Settings > Wi-Fi, tap your network, then DNS and add the custom DNS server.
DNS filtering works across all apps and browsers, and it is difficult to bypass without changing your network settings. The trade-off is that it may slow your connection slightly, and some services block categories of sites (like "adult content") rather than letting you build a custom list. Cloudflare's 1.1.1.1 for Families blocks malware and adult sites but does not let you add your own sites to the blocklist.
Why Chrome Mobile itself has no blocking feature
Chrome on desktop has extensions that block websites — you can install uBlock Origin or similar tools and customize them completely. Chrome Mobile does not support extensions. Google's reasoning is that extensions can slow down mobile browsers and create security risks on devices with limited processing power, but the practical result is that you cannot block sites directly within Chrome.
This is a real limitation if you want lightweight, browser-specific blocking. It is why the workarounds — third-party apps, device-level controls, and DNS services — exist. Each one solves the problem differently depending on your situation. Understanding these alternatives helps you pick the right tool for what you are actually trying to do.
Comparing your options: which method to use
| Method | Cost | Works across all apps | Customizable blocklist | Best for |
|---|---|---|---|---|
| Third-party blocking app (Freedom, Cold Turkey) | $7–40/month or one-time | No, browser-specific | Yes | Self-blocking with a custom list |
| Android Digital Wellbeing | Free | Yes | Limited | Parental control or device-wide restrictions |
| iOS Screen Time | Free | Yes | Limited | Parental control or device-wide restrictions |
| DNS filtering (Cloudflare, Quad9, NextDNS) | Free to $5/month | Yes | Varies by service | Blocking malware and adult content across the device |
If you want to block a few specific sites and you are willing to pay, a third-party app is the fastest setup. If you are managing a child's device or want device-wide blocking, use your operating system's built-in parental controls. If you want to block entire categories (ads, malware, adult content) without managing a custom list, use a DNS service.
Each method has trade-offs between ease of setup, customization, and how straightforward it is to bypass. The right choice depends on whether you are blocking for yourself, managing someone else's device, and how much control you want over the specific sites on your blocklist.
Frequently Asked Questions
Can I block a website just in Chrome without blocking it everywhere else?
Not directly in Chrome Mobile. You would need a third-party app that monitors Chrome specifically, or you would need to use parental controls or DNS filtering, which block across all apps. If you only want to block the site in Chrome and nowhere else, a third-party app is your only option, and even then it depends on the app's design.
Will blocking a website stop me from accessing it if I really want to?
No method is completely tamper-proof on a device you own. If you set a parental control PIN, you can reset your device. If you use a DNS service, you can change your DNS settings back. If you use a third-party app, you can uninstall it. For genuine self-blocking, you need either a separate account you do not control, or a trusted person to set the PIN or password.
Does blocking a website use more battery or data?
Third-party apps and DNS filtering services use minimal extra battery. DNS filtering may use slightly more data because requests are routed through the filtering service's servers, but the difference is usually unnoticeable. Device-level parental controls use almost no extra resources.
Can I block a website on Chrome Mobile without installing an app?
Yes, if you use your device's built-in parental controls (Digital Wellbeing on Android or Screen Time on iOS) or if you change your DNS settings to a filtering service. Both work without installing a third-party app. The trade-off is less customization — you cannot always block a single specific site without also blocking related content.
What happens if I block a website and then forget I blocked it?
You will see an error page or a blocking screen when you try to visit it. The message usually tells you why the site is blocked — for example, "This site is blocked by Digital Wellbeing" or "This site is blocked by your DNS filter." You can then unblock it through the same settings where you blocked it.