White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
Delta Waves
A 2 Hz beat — the slowest preset here, and the one people reach for at the end of the day.
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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
Where the name comes from
EEG researchers divide brain activity into named bands by frequency, and delta is the slowest of them: roughly 0.5 to 4 Hz. It dominates the recordings of deep, dreamless sleep, and in healthy adults it is rare during waking hours.
This preset produces a 2 Hz difference between the two channels — one ear receives 300 Hz, the other 302 Hz — placing the perceived beat squarely in that band. The naming describes the frequency, not a guaranteed outcome.
What 2 Hz feels like
Two pulses a second is slow enough that you perceive it as separate events rather than a tone. Where alpha and beta feel like a texture, delta feels like a pulse you could count, and that changes how people use it: not as a background for work but as something to lie down with.
It is a poor choice during a task. Anything you can count is something your attention can follow, and at 2 Hz there is plenty of time between pulses to notice each one. If you want a binaural layer while working, alpha or beta disappear into the background far more readily.
How to set it up for the evening
Delta pairs naturally with the heavier end of the noise library. Put brown noise or red noise underneath at a comfortable level and keep the binaural volume low — low enough that you notice it only when you go looking for it.
Set the Timer before you start. Sleeping in headphones overnight is uncomfortable and not great for your ears, and an unlimited session means the audio is still running at 4am. A 30- to 60-minute stop is usually plenty.
Common questions
Will delta waves put me to sleep?
They will not do anything to you directly. Some people find a very slow, steady pulse helps them settle; others notice nothing. Use it as part of a wind-down routine rather than expecting it to work on its own.
Can I use it while working?
It is the least suitable of the four for that. At 2 Hz the pulse is slow enough to count, which makes it easy for attention to latch on. Alpha at 10 Hz or beta at 14 Hz sit in the background much more easily.
Is it safe to fall asleep with it playing?
Keep the volume low and use the Timer so playback stops on its own. If you have epilepsy or any condition affected by rhythmic stimulation, check with a doctor before using rhythmic audio at all.