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APU Software APU Loudness Series 6.0.3 for Mac

APU Software APU Loudness Series 6.0.3 for Mac

Mac Audio
Updated Nov 6, 2026
Mac Audio • Updated Nov 6, 2026

The APU Loudness Series, from APU Software, is a family of audio tools built around one idea: loudness should be measured the way people hear it, in LUFS, not just in peaks. APU Loudness Series 6.0.3 for Mac updates the whole suite together — Loudness Meter, Loudness Compressor, Loudness Limiter, Loudness Leveler, Dynamics Optimizer, Loudness Contour, Spectrum Analyzer and TrueGain — for engineers preparing mixes, podcasts and broadcasts that must hit streaming and broadcast loudness targets accurately.

Key Features

  • Loudness Meter with LUFS, True Peak and RMS measurement, history and histogram views (free)
  • Loudness Compressor and Limiter that detect using loudness types, not only signal peaks
  • Dynamics Optimizer that analyses a whole file before reshaping its dynamics
  • File Check in the Meter validates finished WAV and FLAC files against delivery targets, with reports
  • Standalone, VST, VST3, AU and AAX formats across the series for Mac

How to Download

  1. Start with the free Loudness Meter or a trial from APU Software.
  2. Get the installers from the developer: Download from the official site
  3. Install the tools you need, load them in your DAW or standalone, and measure a finished mix against your target.

System Requirements

The Loudness Series requires macOS 10.14 or later on Intel or Apple silicon Macs, with OpenGL 3.2. Plug-in formats include VST, VST3, Audio Unit and AAX, alongside standalone applications.

FAQs

Is anything in the series free?

Yes. The APU Loudness Meter plug-in is free, and APU Software offers trials of the paid tools through its download page, so you can test the workflow before buying.

Who is the Loudness Series for?

Anyone delivering audio to a loudness standard: podcasters, broadcast engineers, and mixing and mastering engineers who need consistent LUFS and True Peak readings.

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