Powerful WYSIWYG markdown!
If you have searched for the iOS equivalent of the popular WYSIWYG none-Mac store app called Typora then you have found it with Matcha.
It combines markdown, quick image & tables, and a clever toolbar of (keyboard/utility) shortcuts...
I am hoping that it doesnt get forgotten as the developers focus on their other products (eg Matcha 3), and that they add more features such as mathjax equation support..
xolaniboy about
Matcha - Writing App & Text Processor, v2.0.4