# Polychrome Computer

> Sing your melody, find the key and work out the chords. Play it anywhere.

- **Website**: https://audiblegoods.com/polychrome/
- **Uneed Page**: https://www.uneed.best/tool/polychrome-computer
- **Pricing**: Free
- **Category**: Personal Life
- **Tags**: Music, Audio, Writing
- **Submitted by**: @audiblegoods
- **Launch Date**: 2026-10-21
- **Social Links**: [Instagram](https://www.instagram.com/audiblegoods/) | [YouTube](https://www.youtube.com/@AudibleGoods)

## About

- Sing something

Tap to start, then sing or hum a melody. Hold each note for a moment to identify the key.

- See the chords

Tap again to stop. The eight chords of that key appear, labelled by scale degree.

- Write your progression

Work out the chord progression that fits your melody with the eight chord buttons.

- Switch voicings

Press SHIFT CHORD VOICING and tap a chord button to change to sevenths, sus2, sus4, add9, first inversion or no third. RESET returns all chords to triads.

It is laid out like a calculator, and it installs like one: add it to your home screen and use it offline.