See what your voice is actually doing.
Real-time analysis of pitch, resonance, and intonation. Built for trans voice training, useful for anyone who talks.
Everything runs in your browser. Audio never leaves your device — no uploads, no storage, no accounts required. It's a measurement tool, not a verdict.
Pitch (F0)
How high or low your voice sits, tracked in real time. We show your pitch against typical adult speaking ranges — descriptive, not prescriptive.
Resonance (F1/F2/F3)
The shape of your vocal tract, measured as vowel formants. This is what voice training actually trains — resonance shifts matter more than pitch alone.
Intonation & quality
Pitch variance, loudness, and brightness. Coming soon: jitter, shimmer, HNR, and recorded A/B comparison.
Why privacy-first?
Voice recordings are biometric data. Shipping them to a server creates legal exposure (GDPR, BIPA) and, more importantly, a trust problem. Training your voice is intimate — the tool shouldn't be nosy.
Everything in this app runs on your device. The audio waveform is analyzed by JavaScript in your browser, the extracted numbers are shown on screen, and then the audio is thrown away. We store nothing. We never will.
This is not a replacement for a coach.
If you're seriously voice-training, working with a speech-language pathologist or experienced trans voice coach is the fastest and safest path. Human coaches can assess vocal health, spot strain, and tailor exercises to your body.
This tool is here for everyday practice between sessions — a cheap, private, always-available second opinion on what your voice is doing.