Yes this is what the “full screen” setting in flowex normally does. (*)
I beleave @Oak refers to it as:
In addition to hideing the top row, on some devices, that have virtual menue bottom buttons, a full screen action can also trigger hideing
Some phones have physical buttons and don’t have the virtual menue bottom buttons, and some phones, like Motola have the “One button nav” option in “Moto Actions” that will permanently hide the virtual menue bottom buttons.
(* The latest beta release, have a new bug, that might confuse this matter more:
[Fixed] New full-screen bug in Beta 3.322)