Noisebud has announced the release of SUBBB, a mastering tool aimed at making hard-to-dial-in settings for a fat low-end as straightforward as possible.
SUBBB automates most of the dynamic control for the low frequencies but you can adjust the floor and the ceiling with the 'Boost' and 'Peak Control' settings. These two controls set the floor and ceiling for the low-end dynamic range, making it easy to adjust the low-end to suit your genre of music.
It's available for Windows as VST3 and VST3 and AU for macOS. It has not been signed and notarized for Mac (yet), so try the demo if you're running any of the latest macOS versions before you join the $5 Patreon campaign to get the download of the full version.