Supported Features
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VoiceOver
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
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Reduced Motion
Quavery Theremin
Your face is the instrument
Only for iPhone
Free · In‑App Purchases
iPhone
Turn your facial expressions into sound.
Quavery turns your iPhone into a face-controlled Theremin. Its TrueDepth camera tracks how you move your face and turns that movement straight into music. It's a fully touchless instrument, with nothing to learn but your own expression.
HOW IT WORKS
• Open your mouth to raise the pitch
• Raise your eyebrows to bring up the volume
• Stretch your mouth to add reverb
• Stick out your tongue to add distortion
• Look left to cycle through waveforms: sine, triangle, square, and sawtooth
• Look right to cycle through pitch scales: continuous, pentatonic, and major
Every control lives on your face, so once the camera is running, you never need to touch the screen to play.
WATCH WHAT YOU'RE PLAYING
A live status panel shows pitch, volume, reverb, and distortion as you shape them, so you can see exactly what your expression is doing to the sound.
New to Quavery? A short control guide walks you through every expression before you start.
PRIVATE BY DESIGN
Your face never leaves your device. Quavery uses the camera to track your expression in real time, and nothing is ever recorded, stored, or sent anywhere. No account is required to use the app.
FREE TO PLAY
Quavery is free, with no ads. If you'd like to support development, there's an optional tip jar in Settings. Nothing is locked behind it.
Requires an iPhone with a TrueDepth camera (iPhone X or later, excluding iPhone Duo and SE models).
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PRIVACY POLICY
https://leomakkinje.nl/apps/quavery/privacy
TERMS OF USE
https://leomakkinje.nl/apps/quavery/terms
APPLE EULA
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
The screen now stays awake for your whole performance, so it won't dim or lock mid-play.
Added the camera permission message in German, Spanish, French, Italian, Japanese, Korean, Brazilian Portuguese, and Simplified Chinese.
Refined a few Japanese translations for clarity.
The developer, Leo Makkinje, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Leo Makkinje
- Size
- 9.7 MB
- Category
- Music
- Compatibility
Requires iOS 16.6 or later.
- iPhone
Requires iOS 16.6 or later.
- iPhone
- Languages
English and 9 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Large tip $4.99
- Medium tip $2.99
- Small tip $0.99
- Copyright
- © 2026 Leo Makkinje