Expand/collapse all for mobile app

I love Dynalist. I’m always on the go and rely on using the iOS app a lot. One feature it really could use that is only available as a shortcut on a laptop or desktop is the one-tap ability to expand or collapse all lower level items in a list. It’s way too time consuming to have to collapse or expand them each time. Another idea might be to be enable saving a view exactly as it appears (expanded or collapsed) in bookmarks.