What are screens needed for?

[bestprintsf (Leandro Z)]

Read this, maybe help !!!

General Tips and Tricks for App Inventor/Kodular

Use different screens wisely Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG’s post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed… If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a wh…

Edit: The only benefit that I see is that if you are a beginner you do not have all the blocks in one or two screens, but in many.
Too many blocks on a single screen can confuse more than one.