B.2 TeXZilla App

The app has an input box for the LaTeX expression, a few help buttons and an “Add” button. When the user enters the LaTeX expression a preview of the equation is provided (second screenshot) and after pressing the “Add” button the equation is saved and a “delete” icon appears on the right of it.

The screenshots below show a version of the app without the “help” buttons. Instead, a virtual keyboard with suitable keys for math is directly integrated into Firefox OS.