Privacy Policy
Last updated: September 2026
Short version: everything runs locally in your browser via the Web Audio API. No audio is recorded, nothing is uploaded, there are no accounts.
Audio data: tones are synthesized on-device with OscillatorNode / GainNode. No microphone permission is requested. No audio leaves your device.
What we store: only a theme preference (dark/light) in your browser's localStorage, and frequency/waveform in the URL query string when you use share links — both stay on your device unless you share the link.
Analytics & cookies: no advertising cookies and no cross-site trackers are set by this tool itself. If deployment analytics are added later, this page will be updated.
Contact: questions? See Contact.