When comparing LightPaper vs Focused, the Slant community recommends LightPaper for most people. In the question“What are the best Markdown editors for OS X?” LightPaper is ranked 21st while Focused is ranked 30th. The most important reason people chose LightPaper is:
Can be extended to support Multimarkdown, GFM-style code fences with syntax highlighting and even math rendering.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Extended markdown support
Can be extended to support Multimarkdown, GFM-style code fences with syntax highlighting and even math rendering.
Pro Advanced file-management built-in
Can browse and open files and even has a built-in fuzzy file search.
Pro Built-in preview
Pro PDF & HTML export
Pro Your own preview template is supported
You can create your own template that is aligned with your branding.
Pro Distraction free writing experience
Focused's interface is quite minimalistic and allows you to focus on the writing and the writing only. There's nothing that may distract the user.
Pro Integrated Markdown viewer
You won't need an additional app to preview generated content.
Pro Stress-free writing
Very uncomplicated. Creates a stress free writing environment.
Pro Comes from a good stable
Developer has produced other well-designed and stable apps.
Cons
Con Crashed repeatedly and refused to open without crashing after theme installation
Con Spell checking needs to be activated every time you open a file
In order to activate the spell checker you have to do so every time you open a file in LightPaper. There's no way to leave this setting on by default.
Con Might be abandoned
There has not been any update for quite some time.

Con Clunky interface
The interface is somewhat clunky and using it just isn't all that enjoyable.
Con Cannot publish directly to wordpress or other blogging platforms
Con No footnotes support
Doesn't handle MultiMarkdown footnotes well - or at all.
Con The "music" won't be to everyone's tastes
Focused uses various soundtracks to keep the user focused on the writing. But these soundtracks are built-in and may not be liked by everyone.
