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
Research in environmental psychology shows that moderate ambient noise (around 70 dB) enhances creative thinking and sustained attention. Complete silence can actually be distracting — your brain starts seeking stimulation, making you more susceptible to interruptions. White noise and other ambient sounds create a consistent auditory backdrop that masks sudden noises (a door closing, a notification ping, traffic outside) without demanding your attention. When paired with the Pomodoro Technique's structured focus blocks, ambient sound creates an optimal environment for deep work.
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
Deeper, warmer frequencies that many people find more natural and less harsh than white noise. Currently the most popular ambient sound for focus — often described as a gentle waterfall or strong wind. Excellent for ADHD focus.
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 ambient murmur that recreates the productive buzz of a coffee shop. Research shows café-level noise (~70 dB) is the sweet spot for creative thinking — enough stimulation to keep you engaged without overwhelming focus.
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 leaves layered with a distant wind hum. Brings the serenity of nature indoors — perfect for reducing stress and maintaining calm focus during long study sessions.
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 — Brown noise or white noise. The consistent, non-verbal sound helps maintain flow state without competing for language-processing resources in your brain.
Writing and creative work — Café ambiance or ocean waves. The moderate complexity boosts abstract thinking and creative problem-solving.
Reading and studying — Rain or forest sounds. The gentle, rhythmic quality promotes calm focus without the stimulation that might distract from comprehension.
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. The gentle water sounds promote a meditative state that's perfect for journaling, brainstorming, and reading.
ADHD focus — Brown noise is the top recommendation from the ADHD community. Its deep, steady tone provides the external stimulation that ADHD brains need to stay anchored. See our 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?
Minimal impact. The sounds are generated using the Web Audio API with small looping buffers, which is far more efficient than streaming audio. It uses roughly the same resources as playing a simple audio file.
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.