Coverage: the whole screen
Because the check happens at the display rather than the network, the source does not matter. Social feeds, messaging apps, in-app browsers, image search, private tabs, a link someone sent you — all filtered the same way.
A porn blocker that works in every app
Browser blockers stop working the moment you open a different app. ScreenBlock filters the screen itself — every app, every network — and locks behind a PIN so the version of you that wants it gone can't simply remove it.
Why blockers fail
The two ways every blocker gets beaten
If you have tried blockers before, you already know both failure modes. Neither is about willpower.
The first is coverage. Most tools filter one browser or block a list of domains. But explicit content is not mostly on catalogued porn sites any more — it is in a Reddit feed, a Telegram channel, an X timeline, a Snapchat message. Those apps are on the allowed list, their traffic is encrypted, and a domain blocker cannot see inside them.
The second is removal. A blocker you can uninstall is a blocker that gets uninstalled — not by a stranger, but by you, at 1am, in about forty seconds. Any tool whose off switch is available in the moment you most want to press it is not really a barrier.
The approach
Close both gaps at once
ScreenBlock analyses what is being drawn on your screen with an AI model running on the phone itself. When it recognises explicit imagery, an overlay covers it — usually before you have registered what you were looking at.
Removal: a PIN you can give away
Set the PIN while you are thinking clearly, then hand it to a partner, a friend, or an accountability partner. Turning the filter off stops being a private decision and becomes a conversation you have to start.
- Works with no internet connection — the model is on the device, so there is no VPN to disable and no DNS setting to revert.
- Nothing is logged or reported. No history, no accountability emails, no screenshots sent anywhere. Nothing is recorded, so nothing can leak.
- Free, with no account. No sign-up, no subscription, no email address required.
Being honest
What a blocker can and cannot do
A filter is friction, not a cure. It changes a two-second impulse into something that takes deliberate effort, and for most people that gap is where the decision actually gets made. That is genuinely valuable — and it is also the limit of what software can do.
ScreenBlock will not address why the urge shows up, and it is not a determined adversary's match: someone with time, intent and full control of the device can eventually work around any app. It is built for the ordinary case — the impulsive moment, not the planned one. Used alongside honest conversations, and professional support where that is warranted, it removes the easiest path. On its own, it buys you time to choose differently.
A practical suggestion: set the PIN and give it to someone else on day one. People who keep their own PIN tend to use it within a fortnight. People who gave it away tend not to get the chance.
If compulsive use is affecting your relationships, work, or wellbeing, a filter is a helpful piece of a plan rather than the whole of one. Speaking to a doctor or a qualified therapist is worth doing — and if you are struggling badly, please reach out to a local helpline or someone you trust.
FAQ
Common questions
What is the best porn blocker for Android?
The most effective blockers work at the screen level rather than the browser or DNS level, and cannot be removed on impulse. ScreenBlock analyses what is drawn on the display using on-device AI, so it covers every app including social media and messaging, and its PIN lock prevents the filter being switched off in a weak moment.
Can I block porn on Android for free?
Yes. ScreenBlock is free and requires no account or subscription. It runs entirely on the device with no server component, so there is nothing to bill for.
Does it work on Instagram, Reddit and Telegram?
Yes. Domain-based blockers do not, because those apps are on the allowed list and their traffic is encrypted. ScreenBlock analyses the rendered image rather than the network request, so it filters inside those apps like any other.
What stops me uninstalling it when I want to?
The settings are PIN-locked, so the filter cannot be paused or reconfigured without the code. Many people give the PIN to a partner or accountability partner, which turns a private impulse into a conversation.
Does it report my activity to anyone?
No. ScreenBlock has no logging, no reporting, and no accountability emails. Frames are analysed in memory and discarded. Nothing is recorded, so nothing can be shared or leaked.
Does it work in incognito mode?
Yes. Private browsing hides history, not pixels. ScreenBlock filters incognito tabs exactly like normal ones.
Get started
Put a barrier where the impulse is
Free, no account, PIN-locked, and nothing about you leaves the phone.