From demo to song

The phone voice note, cleaned, in tune and with a report card.

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How it works

Load a file (a WhatsApp voice note works) or record here. Say what's on the recording, pick tuning and backing, and press the button.
KIVO trims silence, removes hum and the noise between phrases, warms the voice and brings it forward, adds a little room and sets the loudness to streaming level.
The report card measures tuning, time, structure and range and tells you what to improve, with the places marked on the waveform.

Everything happens on this device: no file is uploaded and nothing leaves the browser.