bx_meter will show you Peak and RMS values of your mixes, and in addition to that it will show you the relation between both with the centered Dynamic LEDs. bx_meter has a Mid / Side mode (Sum and Difference) in addition to the standard L/R mode, and it offers 3 different weightings to be used to display the dynamics more like you hear them. Just like all the other Brainworx tools you will find several solo switches and nice extra features like the floating dynamic LED mode.

bx_meter is not the tool that will automatically make your mixes sound better, of course, but it will give you some insight in what you are doing when you are mixing or mastering, and understanding the correlation of dynamics, M/S, phase and levels by listening to your music will help you mix / master better.