Clearroom is room and headphone calibration software for macOS, made by a working mixing and mastering engineer in Chennai. It measures your room with any measurement mic that has a calibration file, scores the measurement before it corrects anything (Full, Tone, Limited or Redo needed), and corrects what you hear towards a target you choose, with ten intensities to audition. It knows 782 headphone models, so headphones need no measurement. It runs system-wide through its own audio driver or inside your DAW as an AU / VST3 plugin, adds no latency at 48 kHz, and never changes a bounce. Version 1.0 corrects magnitude only; it is stereo only and does not replace acoustic treatment. macOS 12.3 and later on Apple Silicon, 10.15 and later on Intel. One-time purchase, one licence for two Macs, and a free 14-day trial of the full app.