Only if you can choose between "normal practice" and "timed practice", just like in the web version.
A few months ago Duolingo tested "timed practice" in the Android app, but they received many complaints because you had no choice then.
The timer was set to 60 seconds.
What is the point of having a timer ticking, when you are quite busy with tapping the words?
BTW: Is ANYONE working on the "DuoLessonsFix" user script to be able to stop the timer on the web portal between questions?