What the tool does, how to run it, and what to expect from the result.
Tune in a quiet room. Press "Start tuning", allow microphone access, then play all 4 strings, one at a time and let it ring. The big note display shows the closest pitch; the bar below it shows how far off you are. Green means within 5 cents, amber within 15 cents, red further off. Standard tuning: G3 D4 A4 E5, low to high.
A quick way to understand who this helps, what it solves, and where it connects next.
Guitarists, violin players, and anyone who needs a quick, free tuner without installing an app.
Tuning a violin to standard pitch (A4 = 440 Hz) before a practice session or recording.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no app install, and no usage limits.
No. The microphone signal is analyzed locally in your browser tab and is never recorded, saved, or sent anywhere.
Standard concert pitch, A4 = 440 Hz.
Yes. A bowed note actually works better than a pluck, since it sustains longer and gives the tuner more time to lock onto a stable pitch.
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Join voice notes into one
Join multiple voice notes into one MP3, in order, without installing anything.
Record voice to MP3
Record microphone audio in the browser and export the take as MP3 locally.
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Play a note and the nearest pitch is identified live from your microphone. Reference pitch A4 = 440 Hz. Nothing is recorded, nothing leaves your device.
Waiting for a clear, sustained note.