White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
Pink Noise
The balanced middle ground — steady rainfall rather than static.
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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 1/f spectrum
Pink noise loses power as frequency rises, at a rate of about 3 dB per octave. Written out, its power spectral density is proportional to 1/f — hence the other name it goes by, 1/f noise. That roll-off is close to a mirror image of how human hearing weights the spectrum, which is why pink noise is the colour people most often describe as sounding "even" or "natural".
It is also strikingly common outside of audio. Rainfall, a river over stones, wind through leaves, the fluctuation of traffic over a day, heart-rate variability — a 1/f distribution keeps turning up in systems that are noisy but not chaotic. Your ear has spent a lifetime hearing it.
Study, sleep and everything in between
Pink noise is the default recommendation when someone wants one setting and does not want to think about it again. It masks a useful range of distraction without the brittle edge of white noise, and it stays comfortable for hours where white noise usually does not.
- Reading and writing, where you want quiet rather than a wall of sound
- Falling asleep — it is the closest of the noise colors to steady rain
- Shared rooms, where a strong masking level would bother other people
- Anyone who finds white noise sharp and brown noise muddy
Pink versus its neighbours
Think of the colours as a slider. White keeps every frequency at full strength and cuts hardest through speech. Pink tips the balance towards the low end and sounds like weather. Brown tips it much further and becomes a rumble. Most people who try all three settle on pink or brown for daily use and keep white in reserve for genuinely loud environments.
If you like pink noise, the rain and forest stream recordings in the ambient library are its natural counterparts — the same broad spectral shape, with organic variation on top.
Common questions
Is pink noise good for sleep?
It is the most commonly chosen colour for sleep, mainly because it resembles steady rain and lacks the sharp high end that can keep people alert. Play it at a low level and use the Timer if you would rather it stop after an hour or two instead of running all night.
Why is it called pink?
By analogy with light. Shifting a flat spectrum towards lower frequencies is like shifting white light towards the red end, and the result — white with extra red — is pink. The naming convention is loose but it has stuck.
Pink noise or rain sounds?
Pink noise is perfectly steady, so nothing in it can catch your attention. A rain recording has texture and small variations, which some people find more pleasant and others find distracting. Try both; you can also layer them and set each one’s volume separately.