Stereo binaural beats for your wind-down, meditation, and focus routines.
Choose a session, keep the volume comfortable, and explore how different tones feel to you—without treating frequency numbers as medical promises.
Research and sources · How binaural beats work · Privacy notice
This is DeepMindSync's public information repository. The application source code is maintained privately. You do not need to download or build anything here to use the app.
- Choose a listening routine: explore Sleep, Calm, Meditation, Focus, and Energy presets, or adjust the sound yourself.
- Follow a changing session: Dynamic presets move through different carrier pitches and beat rates over time.
- Control the stereo tones: adjust carrier pitch, beat rate, volume, and which ear receives the higher tone. Automatic ear balance can alternate the higher side.
- Explore optional themes: Golden Ratio, Silva-Informed, and Solfeggio groups offer mathematical or tradition-inspired listening designs—not validated health protocols.
- Try experimental comparisons: compare 728 Hz and other carriers at the same beat rate, or explore 16/40 Hz beats at a fixed carrier.
- Keep track of your routine: review listening time, streaks, session history, and optional before/after response notes.
- Use guest mode or sign in: listen without an account, or use Google sign-in to sync listening history across devices.
- Install the app where supported: add DeepMindSync to your home screen or desktop through your browser.
Controls and evidence notes are available in English, Spanish, Brazilian Portuguese, French, Simplified Chinese, Japanese, and Arabic, including right-to-left layout. Preset descriptions and the research articles are currently in English.
- Open deepmindsync.web.app and put on stereo headphones.
- Choose a preset and read its evidence note.
- Set your session duration, start with a low volume, and begin when ready.
- Stop whenever you want. If useful, add a personal response note afterward.
When exploring, change one setting at a time. A sound that feels comfortable to you is more useful than chasing a supposedly perfect frequency.
Carrier pitch and beat rate are separate settings:
- The carrier is the midpoint of the two tones sent to your ears.
- The beat rate is the difference between those tones.
- Ear balance determines which ear receives the higher tone.
For example, a 728 Hz carrier with a 10 Hz beat sends 723 Hz to one ear and 733 Hz to the other. It is not a single 728 Hz tone. Headphones help keep those signals separate.
Labels such as Delta, Theta, Alpha, Beta, and Gamma describe the audio's beat-frequency range. They do not show measured brain activity or guarantee a particular mental state.
The Experimental group includes these listening comparisons:
| What changes | Available settings | What stays the same |
|---|---|---|
| Carrier pitch | 728, 700, 727, 784, or 880 Hz | A 10 Hz beat |
| Beat rate | 16 or 40 Hz | A 340 Hz carrier |
These options are for personal exploration, not medical treatment. Keep other settings consistent when comparing them; preference and normal day-to-day variation can influence your experience.
- Binaural-beat findings are mixed. Some studies report benefits in particular contexts, but that does not validate every preset or establish a guaranteed effect.
- 728 Hz has no established special health benefit. Its appearance in wellness or Rife-inspired lists is not clinical evidence for listening to that pitch.
- 432/528 music studies are not pure-tone preset studies. Retuning a musical piece is different from listening to two continuous ear tones.
- 40 Hz is an active research topic, not a proven treatment here. Binaural audio is different from click-based or synchronized light-and-sound research protocols.
- Schumann-inspired audio is not Earth's electromagnetic resonance. Matching the number 7.83 Hz does not establish a special health effect.
- Symbolic and mathematical patterns are listening designs. Solfeggio associations, golden-ratio values, and Silva-inspired stages do not establish medical benefits.
The app does not measure EEG, reproduce clinical audiovisual protocols, or provide visual flicker stimulation. Personal response ratings are notes about your experience—not proof of entrainment, causation, or treatment effects.
Read the frequency research guide for study details, limitations, review date, and links to original sources.
- Guest mode: listening history stays in this browser. It does not sync and may be lost if browser data is cleared.
- Google sign-in: listening history and optional response notes sync to your account. Guest records are migrated when you sign in.
- Data controls: you can clear listening history in the app. See the privacy notice for details and limitations.
- Optional analytics: analytics loads only after you accept it. You can change your choice through Analytics settings.
Read the privacy notice before choosing how you want to use the app.
- Chrome or Edge on desktop: use the app's install button when available, or your browser's install menu.
- Chrome on Android: use the install button or choose Install app from the browser menu.
- Safari on iPhone: choose Share → Add to Home Screen.
Installation availability depends on your browser. Public pages have offline fallback after their assets are cached; sign-in and cloud sync still need a connection. Background and lock-screen playback depend on the browser and operating system, especially on iOS—installation does not guarantee uninterrupted playback.
- Keep the volume low and comfortable, and take breaks.
- Stop if you notice discomfort, ringing, dizziness, or other unwanted effects.
- Do not use the app while driving or operating machinery.
- The volume percentage is not a calibrated sound-pressure measurement or a guarantee of hearing safety.
DeepMindSync is not a medical treatment. It does not establish or promise sleep induction, cognitive enhancement, DNA/tissue repair, pathogen removal, or other frequency-specific health effects. Do not use it to replace or delay professional medical care.
For general listening advice, see the World Health Organization's safe-listening guidance.