When comparing Gingko vs Letterspace, the Slant community recommends Gingko for most people. In the question“What are the best Markdown editors for OS X?” Gingko is ranked 26th while Letterspace is ranked 31st.
Ranked in these QuestionsQuestion Ranking
Pro You can customize colors
Pro Allows focusing on one piece of information at a time
Since Gingko documents are "trees", they are always organized on the go. And since everything is written in cards, it is possible to focus on one chunk of content at a time.
Pro Easy to overview
Despite the complexity of the tree structure, it's always clear where you are, and how to quickly add your thoughts.
Pro Markdown support
All formatting is done via Markdown.
Non-linear notetaking allows you more flexibility, freedom and creativity.
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.
Con No in-app Markdown preview
You can export to PDF or HTML with formatting, but no preview in the Mac app.