When comparing Letterspace vs Bear, the Slant community recommends Bear for most people. In the question“What are the best Markdown editors for OS X?” Bear is ranked 15th while Letterspace is ranked 31st.
Ranked in these QuestionsQuestion Ranking
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.
Pro Easy to use
Pro Flawless sync
It's everything Dropbox Paper promised to be, but without the embarrassment. The notes are always in sync between devices.
Pro Easy tagging
For example: #tag/sub tag/foo/bar #tag2/foo/bar
Pro Beautiful interface
Pro Instant markdown preview in the editor while preserving original MD code
Pro Simple to back up/export entire note database
Notes are exported as plain text, not a proprietary format, along with all embedded objects.
Pro Lots of export formats
PDF, RTF, DOCX, HTML, TXT and MD.
Pro Hashtag support
Adding a hashtag with a keyword tags the note to make it easy to search.
Con No in-app Markdown preview
You can export to PDF or HTML with formatting, but no preview in the Mac app.
Con No Tabs - can only view 1 note at a time
Con No inline editing and markup of pictures
The only option is to open in an editor (thereby creating a copy) and saving it again.