4Comp: AUv3 Compressor Plugin
FET · VCA · Optical · Vari-Mu
About
This audio plugin offers four distinct analog-style compressor models (FET, VCA, Optical, Vari-Mu), each with its own sound and interface. It provides advanced features like stereo linking, sidechain filtering, and real-time transfer curve visualization.
What's New in 4Comp
1.2.0
October 15, 2026
What's new in this version: • Switching compressor models now keeps the model tabs and Input / Output controls in place • The Help sheet now follows the selected model's colours • Moved the Help button beside the model caption • Added bundle and Umbrex links to your local App Store • Improved performance
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FAQ
What are the four compressor models in 4Comp?
4Comp offers four distinct analog-style compressor models: FET, VCA, Optical, and Vari-Mu. Each model has its own dedicated DSP engine and a unique interface that changes to match the selected compressor type.
Does 4Comp work with GarageBand and other DAWs?
Yes, 4Comp is designed to work as an AUv3 plugin within popular iOS DAWs such as GarageBand, AUM, Cubasis, and Loopy Pro on both iPhone and iPad.
What is the price of 4Comp?
4Comp is a paid application, available for $4.99. This one-time purchase grants access to all its features and models.
How often is 4Comp updated?
The app was last updated on October 15, 2026, to version 1.2.0. This indicates a relatively active development cycle, with updates addressing features and guides.
What devices support 4Comp?
4Comp is supported on both iPhone and iPad devices. It is rated for ages 4 and up, making it accessible for a wide range of users.
Does 4Comp have ads?
No, 4Comp does not contain advertisements. As a paid application, it provides an uninterrupted user experience without any ad interruptions.
What is the latency of 4Comp?
4Comp features real-time-safe DSP with 0-sample latency by default. This ensures that the plugin operates with minimal delay, which is crucial for live performance and precise mixing.
What new features were added in version 1.1?
Version 1.1 of 4Comp introduced a quick start guide accessible by tapping the question mark icon, providing assistance for each model. It also added a live transfer curve display for the VCA model.