About

Gesture Synth is a small, browser-first music instrument.

Gesture Synth lets people turn simple hand gestures—or regular keyboard input—into chords, rhythm, responsive visuals, and short performances. It is built for playful experimentation rather than formal music training or professional audio production.

What the project is for

The project explores a clear idea: a person should be able to create a musical result in a few minutes without downloading desktop software, creating an account, or knowing music theory. Gesture choices are deliberately limited so the tool remains learnable and the selected chords work together.

Gesture Synth is maintained as an independent web project. The product, help pages, guides, and policy pages are published and maintained under the Gesture Synth name. Questions, corrections, and privacy requests can be sent directly to the support address below.

How it works

In hand mode, the browser uses camera frames locally to estimate hand position and finger count. One to four raised fingers select a chord, a closed fist pauses, and hand height shapes energy. In keyboard mode, the same musical concept is available without camera permission.

The core camera feature does not upload, record, store, or transmit the live camera feed. Gesture Synth requests video for hand tracking and does not need microphone access to synthesize music. Recording and download availability can vary by browser and device.

Who maintains Gesture Synth

Gesture Synth is designed, built, and maintained by an independent developer as a long-running web project—not a one-week experiment. The instrument, the help pages, and the guides are all written from the actual behavior of the product: when a guide says a gesture triggers a chord or that camera frames stay on the device, that is how the shipped code works.

The project is intentionally small in scope. Instead of adding accounts, social feeds, or a plug-in marketplace, the work goes into making one loop reliable: open the page, make a sound, shape a short performance, and save it if you like. Maintenance means keeping that loop working across current Chrome, Edge, Safari, and Firefox releases, and improving the guides when real camera or audio issues show up.

How the guides are written

Each guide starts from a real task—allowing a camera, fixing jumpy tracking, structuring a first recording—and is checked against the browsers and devices the project supports. Guides state what Gesture Synth does not do as plainly as what it does, because an honest boundary is more useful than an inflated feature claim.

When the product changes, the affected guides are updated and their dates are revised on the page. If you find a sentence that no longer matches the live tool, the contact address below reaches the person who can fix it.

Browse the guides →

Privacy and optional analytics

The product can work without an account. Optional analytics are only loaded after a visitor makes an explicit choice in the analytics prompt; rejecting analytics does not block access to the music tool. The Privacy Policy explains the browser storage, third-party services, and controls in more detail.

Read the Privacy Policy →

Contact and feedback

Found a camera issue, a misleading sentence, or an accessibility problem? Email support@gesture-synth.org. We use feedback to maintain the tool and improve these guides.

Last updated: September 24, 2026