Explore binaural beats and rhythmic flashing visuals similar to dream machines and commercial light-and-sound devices—but with far more control.
Use presets to start instantly, or open the builder to design your own sessions. Works with headphones and your display (or phone or your fancy AR glasses). Layer multiple audio sources with configurable binaural shifts and amplitude envelopes.
Audio entrainment and visual stimulation can feel powerful for some people. Users should proceed carefully and stay within their comfort zone. Avoid visual stimulation if you are sensitive to flashing light or have relevant medical concerns.
Start fast with presets, customize and save your own.
Ready-made experiences for relaxation, focus, altered consciousness, or sleep-oriented ramps.
Adjust tones, source layers, timing tables, envelopes, and visual pulse behavior.
Will work great with your display or propped up phone, but you do need stereo headphones.
All presets can be modified for your personal tastes.
Fast Drop into Deep Sleep
A rapid descent into a sustained deep sleep state.
Open preset →A light-and-sound inspired journey
A preset concept inspired by classic dream-machine style visual stimulation, tuned for experimentation and creative states.
Open preset →Improve Studying/Retention
Simple preset underlaying a 9.55 hz binaural on music.
Open preset →A slow easing path toward rest
Designed as a longer-form session idea for users interested in gradual ramps, low-frequency movement, and deeply calming ambience.
Open preset →Instead of relying on expensive commercial devices and subscriptions, this tool lets you experiment with your own combinations of binaural audio, rhythmic light, and timing structures directly.
Create and modify your own sound-and-light sessions.
Audio entrainment and visual stimulation can feel powerful for some people. Users should proceed carefully and stay within their comfort zone. Avoid visual stimulation if you are sensitive to flashing light or have relevant medical concerns.
Important: read the warning again.
p.s. If you are only bothered by light, you can turn off the flashing.
If you're new to this world, here's the short explanation. Your brain is always producing electrical rhythms often called brainwaves. Different ranges of these rhythms tend to show up during different mental states — relaxed wakefulness, deep sleep, dreaming, focused work, and so on.
Researchers and hobbyists have experimented for decades with ways of gently nudging the brain toward certain rhythms using sound and light. Two of the most common tools for this are binaural beats and rhythmic flashing light.
These ranges are approximate, but they are commonly described like this:
| Band | Frequency | Often associated with | Typical use idea |
|---|---|---|---|
| Delta | 0.5 – 4 Hz | Deep sleep, very slow brain activity, unconscious processes | Sleep-oriented sessions and very slow drifting programs |
| Theta | 4 – 8 Hz | Dreaming, deep meditation, hypnagogic states, creative drifting | Naps, meditation, introspection, dreamy transitions |
| Alpha | 8 – 12 Hz | Relaxed wakefulness, calm alertness, quiet rest | Relaxation, unwinding, eyes-closed rest, gentle focus |
| Beta | 12 – 30 Hz | Active thinking, alertness, problem solving | Focus, task work, stimulation without sleepiness |
| Gamma | 30+ Hz | Very fast activity, intense focus, integration | Less common for casual sessions; usually more experimental |
Binaural beats happen when each ear hears a slightly different tone. For example, if your left ear hears 200 Hz and your right ear hears 210 Hz, the brain perceives a subtle rhythmic pulse at the difference between them — in this case, 10 Hz.
That 10 Hz rhythm falls right in the alpha range, which is why people sometimes experiment with binaural beats to encourage relaxed states.
Rhythmic light works in a similar way. When the eyes are exposed to steady pulses of light, the brain can sometimes synchronize with the rhythm. Devices using this idea have existed for decades — from early "dream machines" in the 1960s to modern commercial light-and-sound meditation devices.
One common idea for a nap session is to start a little higher, ease downward, sit in a dreamy range for a while, then either fade out or slowly come back up. For example:
Some people pair that with dim light or very gentle flashing visuals, while others use audio only. The exact numbers are less important than keeping the session comfortable and gradual.
People experiment with these tools in many ways. Some listen while meditating or relaxing. Some use them before sleep. Others explore creative or introspective states with slow pulsing audio and light. This project simply gives you a flexible environment to experiment with these ideas yourself — using presets to start quickly, or the builder to design your own sessions.