Phosphor Visualizer

Reactive music light show

Only for Mac

$4.99

Mac

Watch your music. Phosphor turns any audio on your Mac into living, beat-synced visuals — 120+ scenes, live wallpaper mode, one-tap clips for Reels & Shorts. Turn any audio on your Mac into living, beat-synced visuals — Spotify, Apple Music, YouTube, any app. 120+ hand-tuned scenes, a live wallpaper mode, and one-tap MP4 recording for Reels, Shorts & Spotify Canvas. Phosphor reads whatever is playing on your Mac and renders it in real time — no setup, no plugins, no uploading your music anywhere. Pick a scene, pick a mode, and let your screen move with the music. THREE DISPLAY MODES • Float — a small borderless window that stays on top while you work. Drag to move, corner-drag to resize. • Fullscreen — edge-to-edge visuals for full immersion. • Wallpaper — Phosphor becomes your desktop, animated behind your icons and windows. Put on an album and your whole screen breathes. MAKE CLIPS WORTH POSTING • One-tap MP4 recording — capture a scene reacting to a track and drop it straight into Reels, Shorts, or a Spotify Canvas. A DEEP, GROWING LIBRARY OF SCENES VFD spectrum bars, ray-marched tunnels, orbiting satellites, oscilloscopes, particle fields, phosphor-glow filaments, and more — each one tuned to react to every transient. New scenes land in regular updates. REAL-TIME POST-PROCESSING Kaleidoscope, glow, film grain, RGB split, beat-shake, camera wobble, scanlines, edge sharpening, chromatic aberration. Stack them, then save any scene + effects combo as a named preset. BUILT FOR YOUR MAC • Two audio sources: built-in mic (room sound) or Core Audio Process Tap (exact system audio, macOS 14.4+) • Media keys to play, pause, and skip tracks in your music app • Menu bar icon with quick scene picker, mode switcher, and playback controls • Apple Silicon–optimized, drawn entirely on the GPU • No accounts. No telemetry. Everything runs on your Mac. Phosphor was built to make listening feel visual again — the spirit of Winamp and MilkDrop, rebuilt for the modern Mac. Requires macOS 14.4 or later, Apple Silicon.

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This update fixes a crash that could occur on launch or when starting audio capture with certain audio devices.

Version 1.0.3

The developer, Antony Messerli, 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
    • Antony Messerli
    Size
    • 9.3 MB
    Category
    • Music
    Compatibility
    Requires macOS 14.4 or later and a Mac with Apple M1 chip or later.
    • Mac
      Requires macOS 14.4 or later and a Mac with Apple M1 chip or later.
    Age Rating
    4+
    Copyright
    • © 2026 Little Knife Labs
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

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