Hiding Home Bar / Swipe up bar -- how to?

I'm working on an app that will be used in laboratory conditions. The application must be as dim as possible. For all the text and buttons, I'm thus using Color(red: 0.1, green: 0.0, blue: 0.0).

However, a bright Home Bar / Swipe up bar emerges whenever the user interacts with the screen. This characteristic renders the iPhone useless in those conditions. In the Android version, such problems do not exist.

And, I have yet to find a solution here in this forum or elsewhere. I must force the Home Bar to be invisible or Color(red: 0.1, green: 0.0, blue: 0.0). How to do that? Can anybody help?

Hiding Home Bar / Swipe up bar -- how to?
 
 
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