UPDATE: The extension has been updated to allow it to install on all versions of Visual Studio Ultimate 2013 (including updates).
The CodeLens Code Health Indicator provides code metrics in Visual Studio 2013 Ultimate via the CodeLens. See method maintainability numbers change as you type. See if you’ve made a given method more or less maintainable with your changes.
Current Known Issues
Please send your suggestions via the smiley face in Visual Studio or via the Visual Studio User Voice page.