Your brain has five rhythms. Learn which one to play.
Brainwave Generator is a free binaural beats instrument for sleep, focus, meditation, and everything in between. Put on stereo headphones, pick a frequency, and your brain will do the rest — the frequency-following response is real, measured on EEG, and documented across more than a hundred peer-reviewed studies. The web version runs in your tab. The mobile app runs on an airplane. Not sure which version to use? We laid it out side by side.
literature
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Five bands. Five minds.
Cortical activity organizes itself into distinct frequency bands, each associated with a characteristic state of consciousness. Hover a tile to explore — or go deeper in the frequency reference.
An instrument, not a playlist.
Real-time binaural synthesis, not pre-recorded loops.
Every frequency is generated on-device at professional 48 kHz sample rate. Change the beat by 0.1 Hz and the output shifts instantly — no library of static MP3s to scroll through. Pure, precise, stereo-isolated, the way the illusion was designed.
Zero internet after download.
No account, no cloud sync, no telemetry, no data collection. Works on flights, in cabins, in rural dead zones. Session history stays on your device.
A wake-up that doesn't feel like cortisol.
Progressive six-phase alarm: Delta → Theta → Alpha → Beta → Gamma over 15 minutes, with matched vibration and screen-light cues. You come up through the bands the way you'd come up through water.
23 tuned presets.
Sleep, deep work, migraine, lucid dreaming, jetlag reset, post-workout recovery. Each built for a specific outcome.
Your own presets.
Manual dials for base (20–2000 Hz), beat (0.5–40 Hz), ambient mix, ramp envelope. Save unlimited.
Five nature beds.
- Rain
- Ocean
- Forest
- Fire
- Space
Reasons people open the app this morning.
To sleep through anything.
Delta beats (2–3 Hz) with rain beds. Drifts you in; runs all night. Stops when the alarm takes over.
Sleep solutions →To focus in a noisy office.
Beta (15–18 Hz) carriers with low-volume ambient. ADHD-tuned protocols without dopamine spikes.
ADHD & focus →To calm without sedation.
Alpha (10 Hz) sessions. Drops baseline arousal without making you drowsy. Good before hard conversations.
Anxiety relief →To enter the REM doorway.
Theta (4.5–7 Hz) timed with natural sleep cycles. Increases recall and, for some, lucidity.
Lucid dreaming →To bench-test your own brain.
The Lab exposes every dial: carriers, beats, envelopes, ambient mix, session timers. Build your own stack.
Biohacking Lab →To study for a real exam.
Mid-beta (15 Hz) with forest bed, 45-min pomodoros, session-history logged for weekly review.
Studying guide →To move harder and recover faster.
Beta pre-workout, delta post-workout. Built-in ramp from 18 Hz to 3 Hz across the session.
Workout beats →To reduce chronic pain load.
Low-delta (1–3 Hz) protocols with 174 Hz Solfeggio carriers. Long-session format.
Chronic pain →Put on headphones. Pick a band. Give it ten minutes. The evidence is not in the hype — it is in what your own brain does next.— From our science page
Built for sixteen languages.
The mobile app ships with full localization — including RTL for Arabic — so the same science is accessible whether you're listening in Istanbul or in Osaka. The website is available in thirteen locales; pick yours below.
Things people reasonably ask.
What are binaural beats?
Binaural beats are an auditory illusion created when two close-but-unequal sine tones are delivered independently to each ear. The brain compares the two carriers and perceives a third, phantom rhythm equal to the difference between them — 200 Hz left + 210 Hz right produces a perceived 10 Hz beat. That difference tone is what pulls cortical oscillators toward synchrony.
Are they scientifically proven?
EEG studies consistently find a frequency-following response in auditory cortex. Peer-reviewed evidence is strongest for anxiety reduction and sustained-attention effects; meditation-depth and memory findings are more variable. Individual response is real, and repeated practice matters more than single sessions.
Do I need headphones?
Yes. Stereo isolation is non-negotiable — each ear must receive an isolated tone for the binaural illusion to emerge. Any standard stereo headphones or earbuds will do. Bluetooth is fine; bone-conduction headsets and single earbuds are not.
Is Brainwave Generator free?
The web generator is completely free with no signup. The mobile app is free, with a premium subscription for unlimited custom presets and ad-free listening.
How long should I listen?
Most research protocols use 15–30 minute sessions. Sleep programs can run through the night. Consistency over 2–4 weeks tends to produce larger, more reliable effects than single long sessions.
Hear your first binaural beat in ten seconds.
Open the web generator in this tab — no signup, no install. Or get the mobile app for offline synthesis, progressive wake-up alarms, and 23 curated presets.