Unlike a note identifier, the tuner begins with an intended pitch. Choose the target note, adjust A4 calibration from 432 to 446 Hz if needed, play the reference tone, then sing until the needle, direction label and cents value converge.
Pitch matching without colour guesswork
Feedback is redundant by design: the needle position, flat/in-tune/sharp word and numeric cents value all communicate the state. Reference tones only play after a button press and have a separate volume control.
Use the instrument
- Allow the microphone. Start from the instrument and approve microphone access. Audio is analysed on this device and is never uploaded.
- Sing a steady tone. Use a comfortable vowel and hold the note. The detector waits for a clear, stable signal instead of counting breaths or squeaks.
- Follow the live feedback. Read the note, frequency, cents and visual shape together. Range mode guides you low then high; the other modes focus on one practice job.
- Stop when you are finished. Stopping releases the microphone immediately. Range results can be saved locally or shared as a generated image without an account.
Frequently asked questions
Does this vocal app record or upload my voice?
No. The microphone signal is analysed inside your browser and is not recorded, uploaded or sent to an API. The app only stores settings and completed range summaries locally on your device, and you can clear those at any time.
Why does the detector ignore some sounds?
That is intentional. Breathing, handling noise and very brief squeaks are unreliable pitch evidence, so the detector requires a clear signal and the range test requires a note to be sustained before it can change your measured low or high note.
Will it work on a phone?
Yes, in a modern mobile browser with microphone permission. On iPhone and iPad, reference tones may be muted by the hardware silent switch even while microphone detection works, so every audio cue is paired with a visible cue.
What A4 calibration should a singer use?
Use 440 Hz unless the instrument or ensemble specifies another reference. The 432–446 Hz control is for matching an existing tuning standard, not for extending vocal range. Changing calibration shifts both the reference tone and cents comparison.