When comparing Writedown! vs Letterspace, the Slant community recommends Letterspace for most people. In the question“What are the best Markdown editors for OS X?” Letterspace is ranked 32nd while Writedown! is ranked 45th. The most important reason people chose Letterspace is:
This was a iOS first app and that is clear. Great swipe bar interface on iOS.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Completely free
This project is distributed under LGPL
Pro The first free markdown editor in Mac App Store
Pro Full featured iOS app
This was a iOS first app and that is clear. Great swipe bar interface on iOS.
Pro Simple, yet powerful interface
Keyboard shortcuts for basic text formatting. A few theme options. Full screen mode and swipe gestures.
Pro @mentions and #tags for easy organization
Pro Advanced Markdown support
Features Markdown support that many other text editors don't; such as Todo's ( -[x] ) and Strikethrough.
Cons
Con Lack of features
The app only supports simple left preview/right editing view, nothing else.
Con No in-app Markdown preview
You can export to PDF or HTML with formatting, but no preview in the Mac app.