FocusSea

White noise and brown noise, online

Two buttons, two real audio tracks looping continuously in your browser. Press the one you need, set the volume, and let it sit in the background while you study or work. Free, no sign-up, no download.

One sound at a time. The loop is handled by the browser, so playback will not stop on its own.

The difference, in plain words

White noise carries the same energy across every frequency, from the low end to the very high end. To the ear it sounds like a flat, fairly bright hiss, the kind you get from an untuned radio or a hairdryer in the next room. It masks voices and sudden noises well, but after an hour some people find it a bit piercing.

Brown noise shifts most of that energy down into the low frequencies and takes it away from the highs. The result is darker, fuller and softer, closer to a distant waterfall, wind moving through trees, or the steady rumble of a plane in flight. Plenty of people say they find it less tiring than white noise over long sessions, but that is a personal preference, not a rule.

The best way to choose is to try both above, a couple of minutes each, at the volume you would actually use while working.

When it actually helps

What we do not claim: that these sounds cure anything, improve memory, or replace sleep. They mask the sound environment around you, and that is it. One session is enough to tell whether they help you, and if they do not, nothing is lost.

Noise alone won't tell you how much you got done

FocusSea puts the same audio inside a timer that measures weighted hours: at the end of a session you rate your focus from 1 to 10, and you see how much real work you did. Free, no ads, data in the EU.

Try it free →

Frequently asked questions

Which is better, white noise or brown noise?

There is no winner. White masks high pitched sounds better, such as sharp voices or keyboards; brown works better on low frequencies and many people describe it as more restful. Try both above and keep the one that still doesn't bother you after ten minutes.

How loud should I set it?

As quiet as it can be while still covering the noise that bothers you. If you clearly notice it the moment you stop working, it is probably too loud. With headphones you need far less volume than you would expect.

Can I leave it running for hours?

Technically yes, the track loops until you press the button again. The sensible caution is about headphone volume rather than the noise itself: long stretches at high volume are a bad idea with any sound, music included.

Do I need a connection while listening?

The track downloads once at the start, then the loop continues without further requests. If the connection drops mid load, reload the page and try again.

Where do these audio files come from?

They are two Pixabay tracks under the Pixabay Content License, free for commercial use with no attribution required: a five minute filtered white noise and a ten minute smoothed brown noise. Real files, not a browser generated tone.

An idea, a problem, anything else?

Noise not playing, or would you like more variants (pink, green, fan)? Write it here: we read everything.

If you don't leave an email, the message stays anonymous.