Four free sound healing tools, all generated on your own device. The Solfeggio player covers all nine tones from 174 Hz to 963 Hz with harmonic layering. The chakra tuner walks the seven centres from root to crown, or runs a full alignment sequence. The frequency generator produces any tone from 20 Hz to 20 kHz across four waveforms, with binaural beats from 1 to 40 Hz. The meditation timer adds synthesised rain, ocean or forest ambience and a 4-7-8 breathing guide.
No account, no sign-in, no trial and no time limit. Session history, streaks and favourites are stored in your own browser rather than on a server, so there is nothing to delete but your own browser data.
Binaural beats need headphones, because the effect depends on each ear receiving a slightly different tone. Everything else works on speakers. Start quieter than feels natural — a healing tone should sit underneath your attention rather than fill it.
Headphones are optional for single tones and recommended for everything else. Binaural beats require headphones — the effect depends on each ear receiving a different frequency, and on speakers the two tones mix in the air before they reach you. For plain Solfeggio tones, speakers work fine, though headphones make low frequencies like 174 Hz far more audible.
Every tool on Sacred Frequency is free with no account, no sign-in and no trial. Your session history and streak are stored in your own browser, not on a server, so nothing is uploaded and nothing is shared.
There are two systems in common use. The classic system has seven chakras and pairs them with 396 to 963 Hz. The extended system adds Earth Star below the feet and Soul Star above the head, making nine, which shifts every tone down one position. Neither is more correct — the seven-chakra map is older and more widely taught, so the chakra tuner uses it, while the nine-tone Solfeggio player labels all nine tones. Pick whichever framing you find useful.
Ten to twenty minutes is the usual starting point, and it is the length most people find sustainable daily. There is no evidence that longer sessions do more, and listening at high volume for long periods risks hearing damage. Keep the volume at a level where you could still hold a conversation.
Yes. Every tone is generated by your own device using the Web Audio API rather than streamed, so once the page has loaded the audio works without a connection. Nothing is downloaded and no audio files are involved.
No. Music and slow, low-frequency sound have measurable effects on relaxation, and there is genuine peer-reviewed research on binaural beats and on 40 Hz gamma stimulation. The specific claims attached to individual Solfeggio frequencies — repairing DNA, cellular healing — are not supported by evidence. Treat these tools as a relaxation practice, not a medical treatment, and never as a replacement for care from a qualified professional.