Am still shopping around for language apps that are Not Duolingo. The initial setup was challenging for me, but there were suggested replies to respond with back to the AI. I struggled but it did not correct me and setup went through. Then I chose the 7 day trial and quite enjoyed it. lessons were structured. vowels, numbers, verb usage of 'to be'. My AI tutor speaks in English with german accent and teaches lessons in mix of English and german. you can adjust their speech speed as well.