Live Preview With Live Preview you can see your changes as you make them! There is no need to export first to check your syntax. This is accompanied with synchronized scrolling.

Github Markdown Remarkable has Github Flavoured Markdown. This has a simple, easy to learn syntax with features like checklists, highlighting, links, images and more!.

Export to PDF and HTML Remarkable allows you to export your files to PDF and HTML from within the app! The HTML code is even prettified and PDF's have a TOC .