This looks kinda interesting:
Core Production BundleHear different presentations of your audio, including core frequencies most sensitive to the ear. Get the sound you want faster, and shape bass that sounds remarkable on every system.
Reveal
Reveal is used to hear problems in the studio before they are heard on consumer listening systems. The top row is used to listen to core frequencies the human ear finds most sensitive.
LowLeveler
Low Leveler allows the user to balance bass instruments inside and outside of the core. Set bass levels with more precision than ever, whether your studio is perfectly accurate or not.
AFMonitor
AfMonitor tracks the time you spend listening to help avoid ear fatigue and the flawed decisions that come from it.
All part of the Soundways "Production Bundle" which is $249. Might be a useful tool to help identify potential problems in the mix that could reveal themselves in different listening scenarios etc, especially if your listening environment isn't the best. On the other hand, it could be bunkum. Might be worth checking out the 14-day trial if you're in the market for this sort of thing.
http://soundways.com/products