StudioZIO Mastering Suite is a free mastering tool for macOS that brings tonal shaping, dynamics, stereo control and delivery metering into one signal path. Its nine stages cover M/S processing, saturation, Pink Match, glue, maximization, tone EQ, clipping, limiting and output. Pink Match listens for twenty seconds against a target curve, then applies correction at a level the user chooses. Loudness measurement includes integrated, short-term and momentary LUFS, plus true peak in dBTP. The limiter’s true-peak detector uses 16× reconstruction; separate true-peak meters use 4× reconstruction. The suite is available as Audio Unit, VST3, AAX and standalone software. It supports macOS 11 or later on Apple Silicon and Intel Macs, and the maker says AAX was validated in Pro Tools. Download and use require no licence key or account. The installer is Developer ID signed and Apple notarized, and a SHA-256 checksum is published.
Who it is for
It suits macOS users looking for a mastering signal path with tonal, dynamics, stereo and loudness tools. It is available in plug-in formats and as a standalone application.
What is good
- Free plan; no licence key or account required.
- Nine processing stages in one signal path.
- Measures LUFS and true peak in dBTP.
- Available as AU, VST3, AAX and standalone.
What to know first
- No Windows or Linux build is planned.
- Requires macOS 11 or later.
- No separate uninstaller is provided.
Verdict
StudioZIO Mastering Suite combines a broad set of mastering stages with loudness and true-peak metering. Its stated platform limit is macOS, and removing it requires deleting installed files and rescanning the host.
StudioZIO Mastering Suite plans and pricing
All plansCompared on audio mastering software
- Free plan
- Yes
- Workflow type
- both
- Loudness standards
- LUFS integrated, short-term and momentary loudness; true peak in dBTP
- Stereo processing
- Yes
- Album sequencing
- No
- Batch processing
- No
- Supported plug-in formats
- AU, VST3, AAX
