Rated 4 out of 5 stars
Short description is wrong! Confusing. Especially when got results different to screenshot after install.
It really "adds a button "M" to the menu bar. And the original main menus are hidden." But IT DO NOT "Hide the menu bar and replace it with a button". To get screenshot-like interface all stuff from Navigation bar should be moved to Menu bar manually and Navigation bar should be hidden.
Real good thing - correct uninstall.
So it may be quite good case for somebody.