I use Forms Builder for the preferences dialog, but it could be used very nicelly for regular embeded form on the application.
I have mane forms to be used on my app that I break in many pages (tabs) and I could load a forms builder json in each one of it. It would be much easier
Well, I could be a great adding... creating forms on B4A is not easy as I used on Delphi... and this dialogs created with forms builder just make a lot of sense when you have large data entry specially on POS