Seven tones — 174, 369, 432, 528, 741, 852 and 963 hertz. This window is the app. Play a tone, then use the bar below for color, number, and the day’s line.
Ground under the body
174Hz
Foundation
The lowest tone in the modern solfeggio list. People put it on when they want weight: a slow, physical hum associated with feeling safer in the body. It is not a painkiller. It is a low F, near the pitch of a quiet speaking voice.
- Nearest note
- ≈ F3
- -6.1 cents
- From A440
- -1606 ¢
- 1200 log₂
- Digit family
- 1 · 4 · 7
- root 3
- Chart color
- Garnet
- tradition
Still schematic of a sine wave
A pure sine. Arrow keys change the tone. Space plays and stops. Layer 440 to hear the interval.