Created new apps.. If found any problems suggest solutions 😜 because I have done my best

there is only one Screen.Backpressed event
but what about checking, if webviewer1 is visible or not?
Taifun
PS: see also the comunity guidelines
http://community.thunkable.com/t/do-not-notify-users-in-1st-post/1685?u=taifun