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# ChordViz

> ChordViz is a real-time MIDI and audio visualizer for Mac and Windows that names the chords you play and shows them on a piano keyboard, sheet-music staff, circle of fifths and piano roll, alongside live audio meters, in unlimited layouts you design yourself — for music lessons, videos and live streams.

- Platforms: macOS 11+ (Apple Silicon and Intel), Windows 10 (1903)+
- Price: 30-day free trial, then $29 USD one time (no subscription), lifetime updates
- Chord names come from MIDI input; audio input drives the audio meters and recordings.

## Pages

- [ChordViz home](https://www.chordviz.ca/): features, widgets, recording, pricing and FAQ
- [Piano and chord overlay for OBS and live streams](https://www.chordviz.ca/piano-visualizer-for-obs): ChordViz puts a live piano keyboard, chord names and notation over your stream with real transparency — no green screen. Play your MIDI keyboard and it shows up in OBS as its own source — Syphon on macOS, a Window Capture on Windows.
- [See what chord you're playing on your MIDI keyboard](https://www.chordviz.ca/chord-detection): ChordViz names every chord you play on a MIDI keyboard the moment it sounds — extensions, inversions and slash chords included — and shows it on a piano keyboard, staff and circle of fifths. Rename any chord your way and it applies in every key.
- [Show the theory while you play: ChordViz for music teachers](https://www.chordviz.ca/for-music-teachers): ChordViz shows students every chord you play — named, on a piano keyboard, staff, circle of fifths and more — in layouts you design yourself: add or delete any of 19 widgets and save as many layouts as your lessons need. Use it in class or over a video call.
- [FAQ](https://www.chordviz.ca/faq): trial, licensing, plugins, MIDI and OBS questions
- [Guides](https://www.chordviz.ca/guides): tutorials
- [How to make ChordViz transparent over your video](https://www.chordviz.ca/guides/transparency-mode): Turn on transparency mode and lay ChordViz over your webcam, screen capture or DAW — with no green screen and no compositing in post.

## Optional

- [Terms & License](https://www.chordviz.ca/terms)
- [Refund policy](https://www.chordviz.ca/refund-policy)
- [Privacy](https://www.chordviz.ca/privacy)