Thank you for your enhancement idea.
We are working on a new release and we will consider this item carefully.
For your information, the iOS keyboard works a little differently, appearing each time you tap the document to insert the cursor. As you've noticed, the Android keyboard only appears after you insert the cursor and then tap EDIT.
I'm not sure if we'll try to make the Android keyboard behave more like the iOS keyboard, or if we'll try to create a keyboard "on/off" toggle for both operating systems as you suggest.
I cannot predict when the next release will be available, but I can assure you we will consider including this item in our next build.
Thank you again for posting an enhancement idea.