White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
15 Minute Timer
A quarter of an hour — the standard long break, and a serviceable sprint.
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
Two jobs, one length
Fifteen minutes does double duty. It is the usual length of the long break that follows four Pomodoro rounds — enough to properly leave the desk, eat something, walk outside — and it is also the shortest block that most people would call a real work sprint rather than a warm-up.
Which one you are doing changes how you should set it up. As a break, the point is to be away from the screen and the audio should not be pulling you back. As a sprint, the point is coverage, and the audio should be doing real work.
Fifteen minutes of actual work
A quarter of an hour is enough for one contained thing: a section of a document, a small bug, a set of exercises, a phone call you have been avoiding. It is not enough for anything requiring a long ramp-up, and trying to use it that way mostly produces the frustration of stopping right as you got somewhere.
The trick is picking the task to fit the box, not the other way round. If you cannot name what will be finished when the timer ends, use a longer block instead — 25 or 45 minutes.
As a break
For the long break in a Pomodoro cycle, fifteen minutes is deliberately generous. Four focus rounds is around two hours of concentrated work, and the break exists so the next set does not start from a deficit.
The Pomodoro timer here runs the whole cycle, switches the sound at each phase change and chimes at the transitions, so you do not have to reset anything between rounds.
Common questions
Is 15 minutes the standard long break?
Yes — the usual recommendation is fifteen to thirty minutes after four focus rounds. Fifteen is the default in the Pomodoro settings here and can be changed to thirty.
Can I use 15 minutes as my focus block?
Yes, if the task fits it. A quarter of an hour handles one contained job well; anything needing a long ramp-up is better served by 25 or 45 minutes.
Does the timer reset automatically?
The plain timer runs once and stops. If you want repeating cycles with automatic breaks, use the Pomodoro timer instead.