You have a point MaggieL. In my experience (iPad2 compatible BT keyboard used on Android systems) it even is essential. After 3½ years of intensive use I still have no clue about some key-combinations, often have to fall back to glass for specific signs that should be available, where others should not but are.
And as you may have experienced, falling back from external keyboard (both BT and USB) to glass got really handicapped since Android 5.0.
So WayTools, get us that app, now that iOS 1.01 has been released. And ship the textblades with a keymap-card to bridge development time.