MJSFX

MJSFX

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macOS sound & effects studio — generate, shape, and export WAVs

Free - Free. Native macOS app for Apple Silicon (macOS 14+). Apple-signed and notarized. Available on the Mac App Store.

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About MJSFX

MJSFX is a native macOS studio for creating bite-sized sound effects. Start from curated generators (pickups, lasers, explosions, blips, etc.), stack layered voices with independent pitch sweeps, envelopes and filters, add effects and LFO modulation, audition in real time with a live "sound portrait," map hardware via MIDI, save to a built-in library, and export drop-in WAV files. Apple-signed, notarized, optimized for Apple Silicon and macOS 14+. Available on the Mac App Store.

Key Features

  • Curated generators for pickups, lasers, explosions, blips, and more
  • Multi-layer voices with per-layer pitch sweeps, amplitude envelopes and filters
  • Effects & modulation: Reverb, Delay, Distortion, Bitcrush, Tremolo, Phaser, Reverse, ADSR and LFOs
  • MIDI hardware mapping and control with saveable profiles
  • Export drop-in WAV files (44.1 kHz and other standard rates)

Who is this for?

Sound designers, game/indie developers, UX/audio designers and macOS users who need quick, exportable sound effects

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