[OS X TeX] Editor with real-time preview?

[Alain Schremmer]

On Jul 17, 2014, at 2:37 PM, Jung-Tsung Shen wrote:

> I was wondering if there is a TeX editor that provides real-time  
> preview? I used to use paper to jot down my calculations and then  
> transcribed to LaTeX documents -- a two-step process (the first step  
> requires some concentration so I do not want to get interrupted by  
> the extra compiling process). Now with the computer faster enough, I  
> was hoping a real-time preview could help simplify the process.

<http://www.math.uni-heidelberg.de/studinfo/gerhardt/Flashmode/>

Regards
--schremmer