Works Great…If Only…
The app works great and downloads needed packages automatically (needs a connection, of course, wi-fi or cellular) and compiled PDFs look very good. If only some packages were more current. I use some of the tikz derived packages (among others) and have had to manually derive or load the .sty files for compatibility with a LaTex editor on my PCs using Texlive.
GreyCav about
TeX Writer - LaTeX On The Go