Tap or hover a highlighted region to explore it.
An interactive frequency atlas of the brain & human anatomy
Tap or hover a highlighted region to explore it.
Your free trial has ended. Unlock every map and tone — a one-time purchase, no subscription.
Sound & the Body is an educational and creative frequency atlas. Please read before you begin:
Interactive Frequency Atlas · version 1.7
This app is for education, curiosity and creative exploration only. It is not a medical device and does not diagnose, treat, cure, or prevent any condition. Nothing here is medical, psychological, or health advice. Always consult a qualified professional for health concerns. Do not use this app in place of medical care, and do not use sound to treat any condition.
The app separates two very different things: measured physical frequencies (EEG brainwave bands, NMR/MRI resonances, molecular terahertz vibrations, the cesium atomic clock) are real science; "healing" frequency claims (Solfeggio, chakra tuning, Rife frequencies, "528 Hz DNA repair") are traditional or speculative beliefs that are not supported by scientific evidence. Frequencies far above hearing are played as clearly-labelled symbolic audible stand-ins.
This app is built to respect your privacy completely:
• No accounts or sign-in.
• No analytics, ads, trackers, or cookies.
• The atlas works offline. Every diagram, 3D model and tone is generated on your device. Nothing about what you look at or listen to is recorded or sent anywhere.
• Saved on your device only: that you accepted this notice, when your trial began, and your settings.
Unlocking the app is a purchase, and purchases cannot happen offline. When the app starts, and when you buy or restore, it contacts Apple and RevenueCat, the service that verifies the purchase. They receive an anonymous purchase identifier and receipt details from Apple — not your name, and nothing about your use of the atlas.
That is the only network connection the app makes. We have no server of our own, and we never see your data.
Tones and pulses are generated live. Loud or sustained sound can be uncomfortable or harmful to hearing — begin at a low volume, take breaks, and be cautious with headphones. If you have a seizure disorder, note that rhythmic pulsing light or sound can be a trigger; stop if you feel unwell.
A hand-built atlas mapping frequencies across nine maps — brain, body, organs, muscles, nerves, cells, atoms, harmony and brainwaves. Sounds are synthesized live with the Web Audio API, on your device.
Every map and every tone, on this device, permanently.
Where every measured figure in this atlas comes from
The app shows two kinds of number and never mixes them. Measured figures — EEG brainwave bands, NMR/MRI resonances, the caesium atomic clock — come from the published sources listed below. Traditional figures — Solfeggio, chakra pitches, the "528 Hz DNA repair" tone — have no scientific source, and the app says so wherever it shows them.
Frequencies above hearing (MHz to THz) cannot be played. Where you see one, the app plays a clearly-labelled symbolic audible stand-in, which is a representation and not a measurement.
These references are provided so you can check the physical figures for yourself. They are not treatment guidance. This app does not diagnose, treat, cure or prevent any condition. Consult a qualified professional for any health concern.