New with Duolingo, agreed that it tends to keep you at a high level of success. I disagree that this is (only) about keeping you using the app. When I studied

New with Duolingo, agreed that it tends to keep you at a high level of success. I disagree that this is (only) about keeping you using the app. When I studied piano, it was critical to work through pieces slowly and in small snippets that you could play. If that meant a quarter the speed marked, so be it (if slower than that, you'd bitten off more than you could chew). Otherwise, you weren't practicing the music, you were practicing your own mistakes. So a 95+ success is really about practicing reading and producing the language correctly as it is about playing games (the games may help ease the conscious boredom of the same thing over and over while the reflexes build). Also, something like 'the owl' and 'the mouse' may seem trivial and logo-ed, but the language angle is 'le hibou' vs 'la souris' (masculine vs feminine gender) and these don't follow across different languages ('die Eule, die Maus' - both feminine) so repeating this along with exercises that flesh this out has value. I do think that the exercises don't often enough provide the opportunity to get it wrong, but that may be the 95% thing.