Pick an interval, press play, then choose white noise, pink noise, rain or ocean. The sound is generated in your browser the moment you click — no mp3 to download, no account, nothing uploaded.
Short answer: continuous and uninteresting. The goal of a focus sound is not to feel good, it is to cover the things that would otherwise interrupt you — hallway talk, keyboard clatter, a fridge cycling. Anything with a melody, a beat drop or a bird chirp every nine seconds becomes the interruption itself. Of the four above, white noise is the blunt instrument, pink noise is softer on the ears, rain gives you a steady broadband wash, and ocean moves slowly enough that it never grabs attention.
| Sound | Character | Best for |
|---|---|---|
| White noise | Even across all frequencies, bright | Loud open offices, unpredictable noise |
| Pink noise | Energy drops with frequency, softer | Long sessions, sensitive hearing, headphones |
| Rain | Filtered noise with fine texture | Home working, study evenings, reading |
| Ocean | Low rumble with a slow swell | Winding down, deep work, low light |
Playlists fail as focus audio for a measurable reason: they change. A track has an intro, a build, a chorus and an ending — each transition is a small prediction error your brain has to resolve, and each resolution pulls attention off the task. The pages that rank for "focus music" usually promise 10 hours of ambient lo-fi; the honest version is that you want a signal with no events in it. That is exactly what noise bands are, which is why they are the audio equivalent of a blank wall.
Being straight with you: the evidence is mixed and mostly about ADHD. Small randomised studies of white noise reported improvements in task performance and attention for children with ADHD, and no benefit — sometimes a cost — for children without it. That asymmetry is consistent with the arousal theory: noise raises stimulation for under-aroused brains. For neurotypical adults, the reliable benefit is simpler and boring — masking unpredictable sound beats trying to ignore it. So: if you have ADHD, white noise is a reasonable thing to test on yourself for a week; if you don't, judge it purely on whether the room got quieter.
Related, not identical. The main app carries five sound beds — forest, rain, white noise, pink noise and ocean — and you unlock them with grain, the in-app currency you earn by finishing sessions, not with a card. This page is a stripped tool: four synthesised sounds, a countdown, no unlock, no progress, no account. Use this when you just need the noise; use the app when you want the bird to remember whether you showed up.
Keep it under conversation level — if a colleague can hear it from one desk away, it is too loud for an eight-hour day. With earbuds, follow the 60/60 habit: below 60 percent volume, rest your ears every 60 minutes, which lines up nicely with a pomodoro break. Pink noise or ocean at low level is the safest pick for long stretches, because they carry less high-frequency energy than white noise.
No. The noise is produced by the Web Audio API inside this page, so there is no audio file to fetch and nothing to install. It works in Chrome, Edge, Safari and Firefox.
Once this page has loaded, the sound and the countdown both run locally in the tab. Nothing is uploaded, and there is no install step to be blocked by IT policy.
White noise spreads equal energy across every frequency, which reads as bright or hissy. Pink noise reduces energy as frequency rises, so it sounds softer and more like rain on a window. Pink is usually easier on the ears for hours at a time.
For most people, yes — because rain has no melody, no lyrics and no beat to pull at your attention. "Focus music" only works when it is boring enough to stop being music.
Yes: the four buttons are 25, 50, 15 and 5 minutes, so you can run classic pomodoro on this page alone. The 25 minute timer is there if you want a page dedicated to that interval.