Option to hide the top bar (title and home icon)

On a small 480×480 screen with a 3×3 grid, the top bar takes noticeable space. My mother can’t read the small items there anyway. I can turn off the home button and change the title, but the bar’s space stays reserved.

Request: a per-screen (or per-page) option to hide the top bar entirely and give its height to the tile grid.