Right answer covers up wrong answer.
In the new Android update that came unannounced last week, on a phone, the right answer covers up my wrong answer so I can't compare them and see what I did wrong. Also, in spoken text exercises, the keyboard covers up the text buttons, so to repeat the text I have to retract the keyboard to use the buttons. In general, all the graphics seem too large and look childish. I wish I could just use the old interface again.