Pomodoro Timer with White Noise
Focus timer with 8 built-in ambient sounds. White noise, brown noise, rain, café, ocean waves, forest, clock, and stream — all generated in your browser, no downloads required.
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25 min focus → 5 min break
Every 4 sessions → 15 min long break
Press ? for keyboard shortcuts
Why Ambient Sound Improves Focus
Ambient sound can mask unpredictable noises, but it is not a universal focus aid. Experiments published in the Journal of Consumer Research found that moderate ambient noise improved performance on creative tasks compared with lower noise in that study, while higher noise impaired it. That result does not establish one ideal volume for every task. Start quietly, compare a session with and without sound, and stop if it adds strain. Read the study abstract.
Built-In Ambient Sounds
White Noise
Equal energy across all frequencies. The classic choice for blocking distractions — effective for open offices, noisy environments, and anyone who needs a clean audio blanket over background sounds.
Brown Noise
Lower-frequency noise with a deeper character than white noise. Try it when white noise feels harsh, then compare whether the sound masks distractions without becoming one.
Rain
Synthesized rain ambiance with natural-feeling modulation. The rhythmic patter of rain is one of the most universally calming sounds — perfect for reading, writing, and creative work.
Café
Layered filtered noise that resembles a distant coffee-shop murmur. Keep it at a comfortable level and treat it as an optional environment cue, not a guaranteed creativity setting.
Ocean Waves
Slow, rhythmic wave cycles with foam and wash sounds. The natural ebb and flow mimics breathing patterns, promoting a calm, meditative focus state — ideal for writing and reflective work.
Forest
Gentle rustling layered with a distant wind-like hum. Choose it if a softer, less uniform texture is easier to ignore than white noise.
Clock
Steady tick-tock of a pendulum clock. The rhythmic, predictable sound creates a sense of time passing that helps maintain focus and urgency — like a gentle metronome for your work sessions.
Stream
Gentle babbling brook with flowing water texture. The soft, continuous sound of water trickling over stones is deeply calming — ideal for meditation, reading, and reflective thinking.
How to Use Ambient Sound with Pomodoro
Select Your Sound
Choose from 8 ambient sounds in the panel below the timer: White Noise, Brown Noise, Rain, Café, Ocean Waves, Forest, Clock, or Stream. The sound plays automatically during focus sessions and pauses during breaks — giving your ears a rest when your brain gets one too.
Adjust the Volume
Use the volume slider to find your ideal level. The ambient sound volume is independent from the timer alert sounds, so you can have gentle background noise without missing your session-end notification. Start around 30% and adjust based on your environment.
No Extra Apps Needed
All sounds are generated directly in your browser using the Web Audio API — no audio files to download, no streaming, no separate white noise app running in the background. This means it works offline and uses minimal system resources. Your preference is saved automatically and persists between sessions.
Best Ambient Sound for Different Tasks
Coding and technical work — Compare brown noise, white noise, and silence during the same type of task. Keep the option that best masks your environment.
Writing and creative work — Try café ambience or ocean waves only if changing texture does not pull attention from the draft.
Reading and studying — Rain or forest sounds provide a softer texture, but silence may be better for language-heavy material.
Structured focus — Clock tick-tock. The rhythmic sound creates a natural sense of time passing, helping you stay aware of your session without watching the countdown.
Calm, reflective work — Stream or ocean waves offer slower variation. Use a low volume so the sound stays in the background.
ADHD-friendly experimentation — Some people prefer steady noise and others need quiet. Compare conditions rather than treating one sound as an ADHD intervention. See the ADHD focus timer guide.
Frequently Asked Questions
Does the ambient sound play during breaks?
No. The ambient sound automatically pauses when your focus session ends and resumes when the next focus session starts. This gives your ears a genuine rest during breaks and creates a clear auditory boundary between work and rest.
Will the ambient sound drain my battery?
Battery impact varies by device, browser, volume, and whether the screen stays awake. The sounds are generated locally instead of streamed, but audio processing still uses power. Compare your device's battery use during a normal session.
Can I use headphones with this?
Absolutely — headphones are recommended for the best experience. They provide better noise isolation and let you keep the ambient volume lower, which is easier on your ears during long focus sessions.