I’m presuming the web app- when you do a local install it stops looking like a browser.
Here is the button to install web apps/PWAs in Edge (it is similar in Chrome)
This installs some files to a fixed location, so you don’t need to rely so much on your net connection and it will show up on the apps section of your browser.
It also means you can make a desktop shortcut, have a pinned taskbar icon etc, just as you would for any locally installed program.
This is one of the ways that SketchUp for i.Pad maybe could be provided : “add to your home screen” normally causes the same thing to happen on IOS