# Radioform

> Radioform is a free, open-source native macOS equalizer that lives in your menu bar and shapes your sound system-wide.

Radioform is a system-wide audio equalizer for macOS. It creates a virtual audio device that sits between your apps and your speakers, processing all system audio through a high-quality DSP engine in real-time with no latency you can hear and sub-1% CPU usage.

## Key Facts

- Free and open-source (GPLv3 license)
- macOS 13.0 Ventura or later
- Runs natively on Apple Silicon and Intel
- 10-band EQ from 32 Hz to 16 kHz
- Built-in presets: Electronic, Acoustic, Classical, Hip-Hop, Pop, R&B, Rock, Flat
- Save your own custom EQ curves
- Built-in limiter and preamp to prevent clipping
- No latency you can hear
- Sub-1% CPU usage
- No subscriptions, no data collection
- Signed and notarized by Apple

## Technical Architecture

- Audio engine: C++ with cascaded biquad filters
- Virtual audio device: Apple Audio Server Plugin (libASPL)
- App: Native Swift/SwiftUI menu bar application
- Communication: Clean C API and shared memory for real-time safety
- Integrates directly with macOS CoreAudio

## Links

- Homepage: https://radioform.app
- About / How It Works: https://radioform.app/about
- Download (DMG): https://github.com/Torteous44/radioform/releases/latest/download/Radioform.dmg
- GitHub Repository: https://github.com/Torteous44/radioform

## Comparison Context

Radioform is comparable to products like SoundSource, eqMac, and Boom 3D, but is fully free and open-source. Unlike Electron-based alternatives, it is a native Swift/SwiftUI application with a C++ audio engine, resulting in minimal resource usage and no audible latency.

## Creator

Made by Pavlos RSA (contact@pavloscompany.com)