White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
30 Minute Timer
Half an hour — the block that fits the way calendars are already built.
25:00
Ready
Nothing selected
Sound Library
Calibrated frequencies for deep work and relaxation.
Color Noises
Continuous frequencies for auditory masking.
Brown Noise
Deep, bass-heavy rumble reminiscent of a distant waterfall or thunder.
FREQUENCY: LOW
Pink Noise
Balanced spectrum that sounds more natural to the human ear, like steady rain.
FREQUENCY: BALANCED
Red Noise
Even deeper than Brown noise, focusing heavily on the low-end spectrum.
FREQUENCY: LOW
Black Noise
Near-silence with subtle low-frequency drift. Meditative, like the sound of a quiet room at night.
FREQUENCY: NEAR SILENT
Grey Noise
Psychoacoustically equalized to sound equally loud at every frequency.
FREQUENCY: EQUALIZED
Ambient Sounds
Natural soundscapes recorded in high fidelity.
Rain
Gentle rainfall creating a natural, soothing atmosphere perfect for deep concentration.
SOURCE: RECORDED
Rain on Tent
Rainfall on a tent canvas — cozy, immersive and deeply relaxing for focused work.
SOURCE: RECORDED
Ocean Waves
Rhythmic ocean waves rolling onto shore — a timeless natural soundscape for calm focus.
SOURCE: RECORDED
Wind
Steady breeze flowing through open spaces — airy and expansive for clear thinking.
SOURCE: RECORDED
Forest Stream
A gentle brook flowing through a quiet forest — peaceful and grounding for deep work.
SOURCE: RECORDED
Meadow
Birds and insects in a sunlit meadow — warm, organic ambience for relaxed focus.
SOURCE: RECORDED
Binaural Beats
Brainwave entrainment through stereo frequency offset. Layers with any noise above.
Headphones required for binaural effect
Delta
Deep sleep and healing. Ultra-low 2 Hz beat for total relaxation.
BEAT: 2 Hz
Theta
Meditation and creativity. 6 Hz beat for deep introspection and flow.
BEAT: 6 Hz
Alpha
Calm focus and learning. 10 Hz beat for relaxed concentration.
BEAT: 10 Hz
Beta
Active thinking and energy. 14 Hz beat for alertness and problem solving.
BEAT: 14 Hz
The default unit of a working day
Calendars are divided into half-hours, meetings are booked in half-hours, and most people already think about their day in these units. That makes thirty minutes the least disruptive block to adopt: it drops into an existing schedule without rearranging anything around it.
It is also five minutes longer than the Pomodoro standard, and those five minutes matter more than they sound. A twenty-five-minute block leaves almost no room for the ramp-up at the start; thirty gives you a few minutes to get oriented and still leaves a solid stretch of actual work.
What fits in half an hour
Thirty minutes is enough to finish a discrete piece of work rather than just advance one. A draft section, a small feature, a set of practice problems, a workout, an instrument practice session — things with a shape you can see the end of.
- A focus block with room to warm up
- Exercise or a practice session
- Meal prep, laundry cycles, anything domestic on a clock
- A capped meeting with yourself for planning
Pairing sound with a longer block
Half an hour is where the fatigue difference between the noise colours starts to show. White noise masks best but many people find it tiring by the twenty-minute mark; brown noise and pink noise hold up better over the full block.
Thirty minutes is also available as a focus preset inside the Pomodoro timer, if you want the block to repeat with breaks handled automatically.
Common questions
Is 30 minutes better than 25 for focus?
It suits people who need a few minutes to get oriented, since twenty-five leaves almost no room for that. It also lines up with how calendars are divided. Neither length is better in the abstract.
Can I use 30 minutes as a Pomodoro focus phase?
Yes. Thirty is one of the focus presets in the Pomodoro timer, alongside twenty-five and fifty.
Which sound holds up over half an hour?
Brown or pink noise. White noise masks more aggressively but its high-frequency content becomes tiring for many people well before the block ends.