Please, insert grammar lessons in the Android Version.
Duolingo team, grammar lessons are essential to the learning process of languages. Unfortunately they are not available in the Android app version.
The Android version is too simple comparing it to the desktop version and should be as complete as that.
I use only my Android app and today is the first time I am using my computer. I am soo surprised to find our that there is MORE.
Why is it so? That is not good...
I've been trying to get them to do this for the past year. They just won't do it. You can go to their mobile website on your android; they have the explanations there!