This app is a full featured Markdown editor with live preview, syntax highlighting, TeX, Flowchart, and Sequence Diagram.
A simple, beautiful, and HTML5 WYSIWYG Markdown editor. It will be useful for both beginners and experts alike.
You can open a markdown file to edit from your Google Drive and computer.

Supports Standard Markdown / CommonMark and GFM (GitHub Flavored Markdown)
View as markdown format, HTML format, styled HTML format, Print as PDF.
Real-time Preview, Preformatted text, Code blocks, Tables insert, Code fold, Search replace, HTML entities, Code syntax highlighting, and more.
Markdown Extras: Support ToC (Table of Contents), Emoji, Task lists
Supports decode & fliter of the HTML tags & attributes
Supports TeX (LaTeX expressions), Flowchart and Sequence Diagram