Not A Browser vs Firefox Focus

25 August 2026 · facts checked against public sources on that date

Search for a distraction-free browser and Firefox Focus comes back first, on both platforms, every time. It is a genuinely excellent app and it is almost always the wrong recommendation for the problem people are describing when they search for that.

The confusion is in the name. Focus refers to focused privacy, not focused attention.

What Focus is actually built to do

Firefox Focus blocks a wide range of trackers by default, and it puts a single button in the toolbar that erases your history, cookies and passwords for the session. That is the product. It is aimed at people who do not want to be followed around the web by advertisers, and at that job it is very good indeed and free.

Nothing in that description is about spending less time on your phone.

The erase button is the tell

Here is the clearest way to see the difference.

Focus gives you a button that deletes the evidence of what you browsed. Not A Browser removes the ability to browse.

If you have ever wanted the first button, ask what you wanted it for. Not, generally, so that a tracker would lose track of you. The appeal of a browser that forgets is that it does not accumulate a record: no history list, no suggested sites, no reminder of the hour you spent. It is an app that helps you not notice.

That is a real thing to want. It is the opposite of what someone trying to browse less needs, which is more friction and more noticing, not less.

What happens when you open it

Firefox Focus launches with the address bar focused and the keyboard already up.

That is a deliberate and good design decision for its actual purpose: you opened it because you want to look something up without leaving a trace, so it saves you a tap.

It also means that if you install Focus as part of a digital detox, disable Chrome, and set Focus as your default browser, you have arrived at a phone whose browser opens directly into a search box. You have moved the search bar, made it faster, and removed the history that might have shown you how often you used it.

Not A Browser opens on the page it was handed. There is no launch state, because it cannot be launched with nothing to show, because it has no home screen to land on.

Both can be your default browser

Worth knowing, because it is the setting that determines what actually happens when you tap a link.

Focus can hold the default browser role on Android and on iOS. So can Not A Browser, on Android. Whichever one holds it receives every link tapped anywhere on the phone. The difference is only what happens next: with Focus, the page loads and a search bar sits above it; with Not A Browser, the page loads and there is nothing above it.

Use both, honestly

These are not mutually exclusive, and the combination is reasonable.

Keep Focus installed but not as your default, for the times you genuinely need to look something up on your phone, and there are such times, more than the purists admit. Let Not A Browser hold the default browser role so that links and QR codes land somewhere with no way onward.

That way looking something up is a deliberate act requiring you to open a specific app, rather than the thing that happens automatically every time somebody sends you a link.