It follows optimization, using REST, database queries of SQL-Lite, UI design, using Android Activity and how to use Android Studio. This is fairly new to me and the creation of a similar App seems open and accomplishable. It is a 102 course provided you do know a bit on Java and know how to do their projects.
Answering the quizzes further extends the knowledge of how to produce Apps on Android. Although the link might be a little outdated but surely it provides a lot of insights on App building in general and concepts of how to keep the processes as long as possible and battery life and how to use the radio efficiently to send data.
There is actually a place to hand in projects to actually pass this course. A lot of information to know and is good place to go to if you don't know anything on how to produce an Android App.
