WaveVisual

WaveVisual makes a picture of a sound. You upload a file, record into the mic, or paste a Spotify link. The editor draws the loudness as bars. You set the colors, the shape, and a photo behind them, then download something a print shop can use, or a video of those bars moving with the audio.

Most people make one: a first dance, a voice note, a poster. People who make these for clients pay for a subscription instead of $9 a design. The QR on the print opens the audio again.

The editor runs in the browser. Still images export as vectors, wide enough to print. Video is 1080p and only works from a file you upload. I handle the payments, the credits, and the chat.