When comparing Focused vs IntelliJ IDEA, the Slant community recommends IntelliJ IDEA for most people. In the question“What are the best Markdown editors for OS X?” IntelliJ IDEA is ranked 23rd while Focused is ranked 30th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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.
Pro Great Java Support
Pro A good editor for test-driven development
IntelliJ IDEA is really easy to work with when it comes to test-driven development in Java and JavaScript/TypeScript.
Pro Great JavaScript support
Pro Markdown support with preview
Pro Supports PHP quite well
Pro Great TypeScript support
Really good support for importing classes, libraries, etc. into a typescript class. Making it easy to do TDD.
Pro Good BASH script support
Pro Angular CLI support
Pro Made by developers for developers
It can make one more efficient, but also can get one way too used to shortcuts, autocomplete, and easy debugging.
Cons
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.
Con Is not free
But it does have a free version (Community Edition).
Con Heavy
Consumes more resources than VSCode etc. But depending on your use-case, it can still be worth it for the benefits you get with this editor.
Con Autocomplete does not work while IntelliJ is indexing
But this, in general, is not much of an issue. Usually after npm install, etc.
