Under the old system (pre crowns) I was able to experiment with different sentence constructions, i.e. I actively learnt from my mistakes. I now find I am penalised when I make mistakes which inhibits me from trying new ways of saying things in French. There must be a better way to try to improve accuracy without inhibiting experimentation.
In the iOS App?
Switch to Duolingo's web version (www.duolingo.com) on your phone, because it .......
does not have the punishing "Health" system and gems
(I hope this is still so in the new Duolingo layout (crown levels))
will work in the newest version of the Chrome or Firefox browser on your phone or tablet, if you have rather good Wifi or LTE/4G with an Internet bundle.
uses a good teaching method:
you can select "typing each word" instead of "clicking on predefined words"
often has grammar "Tips and notes"
in Duolingo's new layout (crown levels):
.. tap the lightbulb next to the "Start button".
.. Picture: https://i.imgur.com/wWY1Fpf.png