How to make screen correct size for ios apps?

are we supposed to leave blank spaces at top and bottom of screen for ios to inset their status bar and navigation, like this photo?
iPhone13pro

Every page has a “Safe area” property that defined space beneath the notch. If you disable it, you can extend underneath it.

So, to answer your question, with “Safe area” on, you do not need to leave blank space.

That option for safe area is in red and does not allow me to turn it off or on. I have extend to viewport height checked on all pages, however, because it was the only way I was able to get rid of blank spaces on web app build. Does that make a difference?

That option for safe area is in red and does not allow me to turn it off or on.

Is the “safe area” property not working for you?

That option for safe area is in red and does not allow me to turn it off or on.