Heremin

Theremin for your watch

$0.99 · Designed for iPhone. Not verified for macOS.

Play a theremin with your Apple Watch: raise your arm for the pitch, roll your wrist for the volume, swing sideways to shape the sound. No ads, no subscription. Heremin turns your Apple Watch into a theremin, the electronic instrument you play without touching it. The sound comes from the Watch speaker; your arm is the instrument. HOW TO PLAY • Raise your forearm for higher notes: three octaves, gliding smoothly from one note to the next like a real theremin. • Roll your wrist to set the volume: screen up is full, turned sideways is silent. • Swing your arm sideways to shape the sound: straight ahead is a bright sawtooth, to the right it becomes square, to the left a pure sine. • Turn the Digital Crown to set the Watch volume. • Prefer another layout? In Movements, assign up/down, sideways and wrist roll to pitch, volume or waveform, or to nothing. • Set the waveform with a knob in the menu, like on a real theremin, and keep your arm free for pitch and volume. WATCH + IPHONE With an iPhone that has Ultra Wideband, the iPhone becomes the antenna: lay it on a table and move your wrist toward it. The closer you get, the higher the note, measured to the centimetre. DETAILS • Works on its own on Apple Watch; the iPhone is only needed for Watch + iPhone mode. • Watch + iPhone mode needs Apple Watch Series 6 or later (not SE) and iPhone 11 or later. • Everything happens on your devices. No account, no ads, no tracking.

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The developer, Luca Mattiazzi, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Luca Mattiazzi
    Size
    2.2 MB
    Category
    Music
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    • Apple Watch
      Requires watchOS 11.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Luca Mattiazzi
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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