Thanks for installing Planes by Perxal.
Measure, level and deliver consistent loudness across every track, bus and master — metering to the ITU‑R BS.1770‑4 / EBU R128 standard.
On the next screen you can choose which plug‑in formats to install:
Plug‑ins install into the standard macOS plug‑in folders. You may need to rescan plug‑ins or restart your DAW afterwards.