Loudness Penalty 2: Streaming Loudness Meter Plugin by MeterPlugs

The core function of Loudness Penalty 2 is its realtime Loudness Penalty scores. The plugin supports Spotify Quiet, Normal and Loud modes, plus YouTube Music and YouTube Video modes, so you can compare how the same mix is treated across services.

A lock button freezes the measurements, which helps when you want to compare a passage or a revision without the readings drifting. The plugin also points out the parts of a song that trigger the largest penalty, so you can adjust the material that causes it.

Developers describe the plugin as a way to find out when there is room to turn your music up without incurring a penalty.

Loudness Penalty 2 includes Spotify Loud limiter emulation with a delta preview. The delta button lets you hear only the material the limiter removes, which gives you a direct way to judge the result before publishing.

The interface is fully resizable and responsive, and a compact list view fits into busy sessions. In Pro Tools, the plugin processes faster than realtime in the Audio Suite.