Gesture Synth turns your hands into an instrument through your webcam. Hold up one to four fingers and it plays a chord; add gestures for beats; and it records a music video of the result that you can share. Hand tracking runs in real time in the browser, and the camera feed is processed locally rather than uploaded, which matters for anything pointed at your face. It needs no download, no account and no microphone, and it is free. The honest framing is that this is a creative toy and a good introduction to gesture control, not a tool for producing music seriously. Tracking depends on a decent webcam and lighting, and the musical range is narrow next to any real instrument.
Key features
Plays chords and beats from hand gestures tracked by your webcam
One to four raised fingers select different chords
Records a shareable music video of your performance
Camera processing happens locally in the browser
No download, no account and no microphone needed
Screenshots & demo
Demo video
Screenshots
Pricing
Gesture Synth offers a free plan, with paid upgrades for higher limits and more features.
Pricing is provided as a guide. Check the official site for the latest plans.
Is Gesture Synth expensive?
Gesture Synth has no advertised paid tier. Among the 67 priced tools we list in Audio, the median entry price is $10 a month.
68% of Audio tools in the directory offer a free tier, and this is one of them.
Compared against every priced listing in Audio, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.
Pros & cons
Pros
Completely free with no sign-up
Camera video stays on your device
No instrument or music experience needed to make something
Cons
A creative toy rather than a production music tool
Needs a webcam and reasonable lighting to track hands well
Limited musical range compared with a real instrument
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